You measure the acceleration of a METRA train to be a = 0.58 m/s/s. If you are standing at the front car when the train pulls away, how fast is the train moving after 3 cars pass you?
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- 5. Read the problem carefully. Starting from her house, Karen rode her bicycle 140 m north in 2 minutes. She stopped for 1 minute at the street corner. She then rode her bicycle another 240 m north in 4 minutes to the school. She then immediately turned around and rode her bicycle south 180 meters in 4 minutes. She arrived at her destination, the park. • Complete the table. Show all calculations by the diagram. • Calculate the variables for the first part of her trip from house to school. • Calculate the variables for her entire trip from house to school to park. Distance (d) Displacement (Ax) Avg Speed (v avg) Total Time Avg Velocity (0ave) (0) Home to school Home to school to park School 240 m 180 m Park STOP 140 m House IVEW ORKSH AAGeorge walks to a friend’s house. He walks 750 meters North, then realizes he walked too far. He turns around and walks 250 meters South. The entire walk takes him 13 seconds. What is his velocity in meters per second? Also, is the acceleration due to gravity negative or positive or it depends? I'm really confused. Please help and explain in an easy to understand.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 3 An airplane needs to reach a forward velocity of 203.0 km/h (Please pay attention to the unit km/h here -- km = 1000 m, h = hour) to take off. On a 2000-m runway, what is the minimum uniform acceleration necessary for the plane to take flight if it starts from rest? OA 0.95 m/s2 O B. 0.87 m/s2 OC1.0m/s2 O D.0.79 m/s2 QUESTION 4 The motions ofa car and a truck along a straight road are represented by the velocity-time graphs in the figure. The two vehicles are initially alongside each other at time lick Save and Submit to save and submit. Click Save All Answers to save all answers. Type here to search 近
- Speed, being a scalar, is dependent upon the scalar quantity, distance. Velocity, being a vector, is dependent upon the vector quantity displacement. Now, can you answer the questions below? 3 km You ran from your house to a friend's house that is 3 km away in 30 minutes. You then immediately walked home, taking 1 hour on your return trip. What was your average speed (in km/hr) for the entire trip? What was your average velocity (in km/hr) for the entire trip? 田田 田 田田You are sitting in your car at a red light when you see a zombie standing still 65m in front of your car. You both begin to accelerate towards each other. Your car accelerates at 1.8 m/s^2 and the zombie accelerates at 0.6 m/s^2. How long does it take for you to strike the zombie? Make sure to include a diagram of the physical situation, label know and unknown quantities with units, coordinate system. Please use grade 12 kinematics and label the variables as v1, v2, a (Acceleration), t (time), d (displacement) Thanks!Hi I am in phyiscs I and it has the problem a runner ran the marathon (approx. 26.1) in 2 hours and 57 min. What was the average speed of the runner in m/s? I understand that I would have to divide the total distance by the total time, but I'm not sure how they changed the miles to meters. Please break it down so I can understand. I tried to solve it how you guys did it but I keep getting another answer. Thank you!
- University Physics 1 - Kinematics: (Human reaction time using a ruler) Which out of these 4 equations of constant acceleration, with factors likeex. Distance - meters = 0.19mgravitational acceleration - a = 9.8 m/s^2no velocity - Vo = 0 Reaction time - s =? can bet set fit to find the reaction time (s)? even if you need to rewrite the equation formulas to best meet the units displayed above.If you have spent much time driving, you probably have a good sense of speeds between about 10 and 70 miles per hour. But what are these in meters per second? What do we mean when we say that something is moving at 10 m/s? To get a better sense of what these values really mean, do some observations and calculations on your own: • calculate typical car speeds in meters per second • estimate jogging and walking speed by timing yourself; convert the measurements into both m/s and mi/h • determine the speed of an ant, snail, or falling leafA ball is thrown from the top of a building and falls to the ground below. Its path is determine by the equation h=-4t square + 36t + 40, where h is the height above the ground in meters and t is the elapsed time in seconds. Determine: a. The maximum height the ball reaches and the time it takes to reach maximum height by using the method of completing the square. Keep in fraction form. b. Determine when the ball hits the ground. c. What is the height of the building.
- Solve the following problems 1a. If a student Dawn drives 120 miles in 2 hours how fast was Dawn traveling? 1b. If another student Glenn travels at half the speed of Dawn how long will it take Glenn to drive the 120 miles 1c. If a person drives at 65 MPH how far will they have traveled in 123 minutes 1d. If a person travels for 3 hours at a certain speed, then travels for 2 hours at twice the speed of the first 3 hours and the total number of miles traveled is 280, what are the two speeds? 1e. If a person has 40 coins and half of them are dimes and the other half is nickels how much money does the person have totalA police cruiser is in pursuit of a speeding car farther up the highway. At t=0, the police are 35 miles behind the car and are maintaining a speed of 125mph. The speeding car is travelling at a constant 95mph. Record your answers here but may show your work on a separate page if you need more room. (This will one of only a few problems where we use non-SI units, i.e. mph) • How long (in minutes!) will it take the police to catch up with the car? • How many total miles will the police travel before catching up with the car?Of the following, the longest is a a. 1.2 miles b. 1610m c. 63350 Inches d. 1760 yards 2 The maximum speed in SLEX is 100 km/H. How many miles will you travel per minute? 3. You are doing a project by mixing some concrete, and you've calculated according to the directions that you need six gallons of water for your mix. If you use the two-liter empty bottle of soda to measure your water, how many times will you need to fill it? 4. The density of seawater is 62.8 pounds/feet. How much is this density in kg/m³ 5. You want to check if the gold ring that your fiancée gave you is a "real gold". Upon weighing. the mass of the ring is 9.5 grams and using the water displacement method to determine the volume, and it overflow 0.6 mL. What is the density of your gold ring? Is the ring a real gold? Accepted density of gold is 19300 kg/m³.