Lab Report 2

In the second activity, if you were to use just one object and vary the height from which you drop the object every trial, what would you observe? a. The acceleration due to gravity will be shown to be equal to 9.8 m/s^2. b. The acceleration will be shown to be constant if the relationship between the distance traveled and time of travel is reviewed. c. The time of travel will be shown to increase proportionately with distance traveled. d. The final velocity will be shown to increase proportionately with distance traveled.

Which of these is an example of high precision? a. An archer hits the bulls-eyeb. A student correctly calculates the acceleration due to gravity to be 9.8ms2c. An archer hits the same spot on the target three times in a rowd. A student tries to throw a pencil into the garbage can and makes it ine. A student correctly calculates the mass of an object to be 54kg

OC equal to the magnitude of the weight of the elevator. O D. None of the above QUESTION 10 m/s2 ? An object moves with a constant speed of 428 m/s on a circular track of radius 21 m. What is the magnitude of the acceleration of the object: a= (Note: For fill in blank, I have set the unit for the answer. So, you just need to provide a number - Please write your numerical answer with all digits and do not use scientific notation. If you are not sure about the number of significant figures, you can keep the number of figures as many as possible - You will not be punished for doing this. ) QUESTION 11 Consider two vectors and shown in the figure below. B A Save and Submit to save and submit. Click Save All Answers to save all answers. pe here to search

Question # 2 can you show me how to solve Just a study guide so it's not graded

Analyzing Forces: Using Newton's 2nd Law A fireman has a mass of 75 kg. When the bell in the firehouse starts ringing, he slides down the pole with an acceleration of 3 m/s². What is the total force of friction acting on his body? 1. Identify the problem: What quantity are you being asked to find? What units will this answer be in? 2. Visualize and then sketch the problem. Draw arrows to illustrate the direction of the two forces acting on the fireman. Label these two forces by name. Do not use numbers yet. 3. These two forces act in opposite (+/-) directions and they will partially cancel. Assign the + value to the stronger force. The sum of these two forces is called the Net Force and it is the force which will actually move the fireman. Fill in the names of these two forces in the equation template below. (Hint: Remember that mass and weight are not the same.) Do not use numerical values yet: Net Force = + 4. Newton's 2nd Law gives us another equation for calculating Net Force: Net…

Refer to Figure 2.4 a. Describe how the vertical velocity of the projectile vy varies over time? b. What does the projectile’s vy vs. t plot reveal about the projectile’s acceleration? c. Overall, what can you say about the goodness of fit for all the plots? Explain your answer. HINT: Goodness of fit defines the strength of the variables’ correlation.

Part 2: Tension - Experiment You will now test these predictions using Sparkvue to measure the acceleration of the smart cart). Place 20 gm on your mass hanger. DO NOT LET THE MASS HANGER BANG ONTO THE FLOOR! DO NOT LET THE CART HIT THE PULLEY! Record the acceleration from each run below. Run Acceleration (m/s²) Run 420 402 +433 Acceleration (m/s?) 445 4 2 3 .415 From this data calculate the average and statistical uncertainty for the acceleration. Acceleration = m/s2

From the choices below, If a freely falling rock were equipped with a speedometer, by how much would its speed reading increase with each second of fall? A. Product of gravitational acceleration and time B. Product of gravitational acceleration and time squared C. one-half of the product of gravitational acceleration and time squared D. one-half of the quotient of gravitational acceleration and time squared

LAB 5: MORE ABOUT NEWTON'S LAWS Question 11: When a force is applied to an object with mass equal to 1.00 kg, the acceleration of the mass is 3.25m/s2. (Assume that friction is so small that it can be ignored.) When the same magnitude force is applied to another object, the acceleration is 2.75m/s2. What is the mass of this object? What would the second object's acceleration be if a force twice as large were applied to it? show your calculations. Save & Go Next 99+ Bb 12:2 69°F 10/21 19

Refer to the picture below: a. What is the speed of the object when it is still held at the starting point? b. What happens to the speed of the object as it falls? c. What is the change in velocity per unit time or the acceleration of the object? d. What is the total distance of the object from the ground when it is at the starting point? (t=0 s) e. What happens to the object’s distance from the ground as it falls?

(The complete question is in the picture) Which of the following situations illustrate Newton’s First Law of motion?A. An Isko moving with constantspeed relative to an acceleratingspaceship.B. An Iska rolling down the SunkenGarden.C. An Iska traversing a circular loopwith decreasing speed.D. An Isko at rest on an Ikot jeepneymoving with constant velocity

Scientific Narrative 14 Using your HW Guide as a resource, write a scientific narrative paragraph for the following prompt: How can a ball bouncing up and down be used to describe acceleration?

Directions: Complete the paragraphs below by providing the correct answers. Choose from the answers found inside the textbox. Concepts may be used more than once. Projectile motion Vertical motion Projectile Uniform motion independent Free fall Gravity Trajectory 9.8 m/s² Constant speed is an object that is thrown, shot or launched upon which the is the motion of a ). It follows a curved path which is A (1). only force acting is (2). projectile. Its path is called is (4). parabolic. A projectile has two components-the vertical motion and horizontal motion. The horizontal component is (5). (3). The vertical component is (6). horizontally at (7). (8). other. Therefore, the horizontal and vertical motion can be treated separately. A projectile launched horizontally will be considered to be a free fall because there is a change only in its This means that if air resistance is neglected, a projectile moves and it falls vertically with acceleration of These two components are completely (9).…

Explain your answer to each of the questions below using diagrams, equations, or anyexplanatory rules/principles. A sky diver jumps out of a hovering helicopter. A few seconds afterwards another sky diverjumps out and they both fall along the same vertical line. Ignore air resistance so that bothsky divers fall with the same acceleration. a. Does the difference in their speeds stay the same throughout the fall? b. Does the vertical distance between them stay the same throughout the fall?

Your answers are saved automatically. Remaining Time: 2 hours, 25 minutes, 30 seconds. v Question Completion Status: Moving to another question will save this response. Question 6 A person stands on a bathroom scale in a motionless elevator. When the elevator begins to move, the scale briefly reads only 0.73 of the person's regular weight. Calculate the acceleration of the elevator. A Moving to another question will save this response.

A cart can move along a horizontal line (the + position axis). It moves with the velocity shown below. Time (s) Question 7A: Describe in words the acceleration-tim graph of the cart's motion. Question 7B: Assuming that friction is so small that it can be neglected, describe in words the force-time graph to keep the cart moving with this velocity and acceleration. Question 7C: Explain both of your graphs. Velocity

Your answer What is the value of acceleration due to gravity in cm/s^ convert) * Your answer Consider two balls that are the same size, but different n

Consider a person in a chair with wheels (like you have in lab, say). A friend pushes you down the hallway. They let go when you are moving at 4 m/s. You and the chair have a mass of 85 kg. The frictional force between the chair’s wheels and the ground is 18 Newtons. You and the chair will slow to a stop. a) Draw a motion of you and the chair slowing to a stop. Label the acceleration with an arrow. b) Force list for you and the chair c) Free body diagram for you and the chair d) Write each force as a vector using bracket notation. Fill in numbers for each component. e) Write (sum of F) = m x a for y

problem 1. Consider a ball being tossed straight upwards as shown in the picture below. Indicate the direction of velocity and acceleration in the beginning, midpoint, and end of its motion. problem 2. Consider two balls being released from the same height at the same moment. One ball weigh 2 times more than the other one. Which one do you think will reach the ground first?

A baseball is thrown from deep in the outfield to second base. Ehich of the following quantities are zero when the baseballs is at the peak of its two dimensional motion. Select all that apply. a. The horizontal component of the ballas velocity b. The vertical component of the balls velocity c. The horizontal component of the balls acceleration d. The vertical component of the balls acceleration

Question 6: A force is applied that makes an object move with the acceleration shown below. Assuming that friction is negligible, describe in words how a graph of the force on the object as a function of time would look. Explain your answer. Time(s)

PLEASE ANSWER NUMBER 3 at the YouTube timestamp 5:27 https://www.youtube.com/watch?v=tMKXbLBgkEc Timestamps with questions (2:54) 1. The tower is 45 m. How long does it take the watermelon to fall to the trampoline? a. 3 secondsb. 1.5 secondsc. 6 secondsd. 9 seconds (4:19) 2. How did some of the pieces of watermelon bounce much higher than other pieces?  (5:27) 3. Assuming the guys are average height, about how high is the trampoline off the ground? a. 2.5 mb. 4 mc. 1.5 md. 1.8 m (6:41) 4. The tower is 45 m high. About how high did the ball rebound?  (11:45) 5. How high did the car bounce? Was it about the same as the ball?  (14:11) 6. The car's mass is 923 kg. The trampoline just keeps the car off the ground. Calculate the kinetic energy and momentum just before the car hits the trampoline. The rest is ads.

What is the acceleration of a car that from rest in 2 minutes acquires a velocity of 99 miles/hr?. Give the answer in miles/sec. *         If you walk at a constant speed for 5 minutes and cover a distance of 50 meters, what is your speed?. Express the answer in m/s. *         What is the gravitational acceleration the magnitude and direction of an object that is freely moving upwards? *           What is the acceleration of a box of mass 2kg that is pushed with a force of 10N? *         What is the gravitational force that the Earth exerts on you?. No numbers, explain. *           If an object is lying on a table and its weight is 3N, what is the normal force equal to? *           Does your desk exert any gravitational force on you? why?. *           How many radians represent one and a half revolutions?           An object of mass 5 kg moves at a…

Provide quick solution for the given problem. Solve and box the final answer. WRITE LEGIBLY.

If you shoot two spheres of identical dimensions horizontally off a cliff at identical speeds. One sphere is made of lead and the other is made of aluminum.  I) Which sphere will hit the ground first a) lead sphere b) aluminum sphere c) they land at the same time d) not enough information to solve Lets say both of these spheres were made of copper but had different speeds, one fast and one slow. (These spheres are also identical) II) Which sphere will hit the ground first a) fast sphere b) slow sphere c) they land at the same time d) not enough information to solve

Newton's First Law of Motion CER Using Newton's First Law of Motion, explain why you should always wear a seatbelt when riding in a vehicle. B CLAIM: What is your answer to the question above? EVIDENCE: Compare what happens to a person with a seatbelt during a crash versus what happens to a person who is not wearing a seatbelt. Use the pictures above. REASONING: Use Newton's First Law to explain the two situations given in the evidence section. Use the words Newton's Law of Motion. force, balanced and unbalanced forces

Use GRESA format in doing your solution. Express your answer in two decimal places. FREE FALL A train is operating at an average speed of 115.5 km/h for 3 hours, then at an average speed of 108.0 km/h for the next 2 hours, and lastly it had an average speed of 112.5 km/h on its last 1 hour trip. What was the average speed for the 6 hour trip? NEWTON’S LAW OF MOTION A wagon accelerates 15.0 m/s2 when a force of 650.0 newtons is applied to it. What is the mass of the object? An object with a mass of 3.4 kg has a force of 8.7 newtons applied to it. What is the resulting acceleration of the object?

TU444d5c9fa55721#10001 Learning Goal: To learn to use images of an object in motion to determine position, velocity, and acceleration. The motion of the rocket labeled A is an example of motion with uniform (i.e., constant) O and nonzero acceleration Two toy rockets are traveling in the same direction (taken to be the x axis). A diagram is shown of a time-exposure image where a stroboscope has illuminated the rockets at the uniform time intervals indicated. (Figure 1). O velocity O position O time Submit Request Answer Part E The motion of the rocket labeled B is an example of motion with uniform (i.e., constant) O and nonzero acceleration O velocity O position Figure 1 of 1 View Available Hint(s) O before t =1 only O after t = 4 only

You will measure the acceleration of gravity by dropping a picket fence through a photogate.  The leading edges of the black stripes are 0.050m apart.  As the fence accelerates, the gate will record shorter time periods between stripes.  Fromh this information, it will compute the velocity of the picket fence. For your calculations you will get a table with the measured time and velocity data, as well as the graph velocity vs time. The procedure consists in the following steps a) Prepare software and hold the picket fence above the photogate as shown in Figure 1. (Be sure that the picket fence has a soft, foam pad to land on.) f   Figure 1. Picket fence and photogate  nllln b) Click “record” on the display, then release the picket fence. c) After the picket fence lands, click “stop”. Picket fence must not hit the gate d) Use the velocity vs time in Table 1 to calculate the acceleration of the picket fence due to gravity using the following equation         where a(t0) is the…

1. use Newton's 2nd law to write equations of motion for each of the two masses. Make sure to use the coordinate system given in the figure in the picture. Use notation so that's it's clear which object you're examining.   2. The acceleration of the glider and the hanging mass are related since they are connected by a string. The relevant relationship is aGx = -ahy. The reason for the minus sign is that when the glider accelerations in the +x direction, the hanging mass accelerates in the -y direction. using this fact, and combining the two equations you wrote in the previous part, solve for the acceleration of the glider in terms of the masses mh,mG, and other known constants.

horizontal line (the + position axis). Assume that friction is so small that it can be neglected. Describe in words the graph of the force applied to the object that would cause the motion described to continue. Note that the positive direction is toward the right. Question 8: The object moves toward the right with a constant velocity.