Lab Report N2L - Phys 221

During a high speed chase, a fast running mouse collided with an elephant . The mouse rolled back after the collision. Using Newton's third law to explain the following. A. Why does the mouse roll back? B. Does the elephant have acceleration after the collision? If there is in what direction?

You are asked to double the acceleration of a billiard ball (pool ball). Describe how you will have to change the original force to do this. Explain/show how Newton's 2nd law helps you to get the correct answer. Use complete sentences! A. You will have to apply 2 times the original force B. You will have to apply 3 times the original force C. You will have to apply only 1/2 the original force D. It is not necessary to change the original force

Newton's Third Law of Motion 8. A horse pulls forward on a carriage with a given force. By Newton's third law, the carriage must be pulling on the horse backward with an equal and opposite force. Given this, what explains why the horse and carriage can move forward? a. The cart's force is only in reaction to the horse's force so it does not define direction of movement. b. The cart is rolling on wheels while the horse's hooves have traction with the ground c.The forward force of the horse is just big enough to overcome the backward force of the cart and start the cart forward

You throw your physics book across the room. It hits the floor and skids to a stop. Once it hits the floor, what force keeps the book in motion?      A. The force of friction parallel to the surface keeps the book in motion   B. The normal force from the ground keeps the book in motion   C. The applied force of your throw keeps the book in motion   D. There is no force that keeps it in motion.

NO NEED FOR EXPLANATION NOR SOLUTION19. Which of the following situations applies Newton's Third Law of Motion?A. The gun recoils into your shoulder after firingB. Pushing a truck and a car with the same driving force, the car accelerates fasterC. A marathon runner is not able to stop himself after crossing the finish lineD. The bus driver abruptly brakes, pushing the passengers in the forward direction 20. An interaction between two objects or between an object and its environmentA. Mass C. AccelerationB. Position Vector D. Force

3. You push a grocery cart along a level floor in the presence of friction effects between the cart and the floor. a. Draw force diagrams for you, the cart, and the floor/earth. Fully label all vectors. b. While you are making the cart speed up, how does the size of the force you apply on the cart b. compare to the size of the force the cart exerts on you? Explain. c. While you are making the cart speed up, how does the size of the frictional force on the cart by the floor compare to the frictional force on you by the floor?

Ange wanted to prove to Luca that she is very knowledgeable in Newton’s First Law of Motion. Which of the following anecdotes should she share to demonstrate inertia? A. She saw Harry’s blood rushing from his head to his feet as they were leaving an elevator going down. B. She saw Karen having a hard time moving a stretcher through the concrete. C. She saw Bebu hurting her back when she excitedly laid on a bed in the on-call room. D. She saw Mccoy kicking a gurney and hurting his toe.

Which of the following is NOT an Aristotle’s concept about motion? *   A. Motion can be natural or violent. B. An object will move if an external force is applied. C. The motion of an object is parallel to the ground until it is the object's time to fall back into the ground. D. An object in motion, if unimpeded, will continue to be in motion; an external force is not necessary to maintain the motion.   A rock, a crumpled paper, and a rubber ball, with different masses, were dropped simultaneously. Neglecting air resistance, which object will have the greatest acceleration upon reaching the ground? *   A. The crumpled paper will have the greatest acceleration. B. The three objects will have the same acceleration. C. The rubber ball will have the greatest acceleration. D. The stone will have the greatest acceleration.   The higher the index of refraction of a medium, *   A. the higher its critical angle. B. slower…

Which of Newton's Three Laws of Motion does the following statement satisfy? “Every object in a state of rest or uniform motion tends to remain in that state unless an external force is applied to it”. A. 1 st Law of Motion B. 3 rd Law of Motion C. 2 nd Law of Motion D. None.

A leaf on a tree stars moving when the wind blows on it how is this an example of newton's first law of motion? A. the wind exerts a force on the leaf causing its motion to change B the wind exerts no net force on the leaf because it is not a push or pulls C. the leaf stops moving even though the wind continues to blow

Item 1 A cart with an unknown mass is at rest on one side of a track. A student must find the mass of the cart by using Newton’s second law. The student attaches a force probe to the cart and pulls it while keeping the force constant. A motion detector rests on the opposite end of the track to record the acceleration of the cart as it is pulled. The student uses the measured force and acceleration values and determines that the cart’s mass is 0.4kg. When placed on a balance, the cart’s mass is found to be 0.5kg. Which of the following could explain the difference in mass?

Explain Newton's first Law and solve related problems You are driving to class with your physics book on the front seat. You slam your brakes at a red light and your physics book flies forward into the glove compartment. Which property of the book causes it to do this? a. inertia   b. it would only do this if you pushed it   c. because you had to be accelerating forward before you hit the brakes   d. the book was hit by a propelling force from the car seat   e. none of these

Which of the following statements are true regarding an object in freefall?  You can ignore air resistance for this question. Select all that apply.   A. A heavier object will fall faster than a lighter object.   B. A ball is dropped off a tall tower.  After 3 seconds the ball has fallen 45 m.  This means its final velocity at that point is 15 m/s.   C. The only force acting on an object in freefall is the force of gravity.   D. An object is thrown upward.  As it moves upwards its speed will decrease by 10 m/s each second.   E. A ball is dropped from a tall tower.  As it falls it will travel 10 m for each second that it falls.   F. A ball is thrown up into the air.  At the very top of its path, the acceleration on the ball is 0 m/s/s.

Hi we started this new chapter about the 3 law of newton the exercice is : Two hockey players are standing motionless on the ice rink. At some point, the player on the left (L) pushes the player on the right (R) with a force of 60N. Calculate the acceleration of each player if mL = 80kg and mR = 95kg. Friction will be neglected I don't know what to do actually

How would we describe the following scenario   A child rides their sled at a constant speed down an hill. There is friction between the ground and the sled.   a.   Force Constant   b.   Centripetal Acceleration   c.   Hooke's Law   d.   Translational Equilibrium   e.   Static Friction

1. A rocket is launched off the ground in which the foot pump produces 20 N [Right 60 Up] on the rocket (m = 200g) for 0.15 seconds. *Neglect air resistance* a. Draw an F.B.D. when the force is being applied to the rocket.  b. What is the acceleration of the rocket as it is launched?  c. How far does the rocket travel during the time the force is applied?  d. Draw an F.B.D. when the force is no longer applied (while traveling in the air).  e. At the end of the Force Applied, what is the: i. Velocity of the rocket?  ii. Velocity of the rocket (horizontally)?  iii. Velocity of the rocket (vertically)?

PLEASE WRITE THE ANSWER IN 10 MINUTES ! ! ! Which of the following correctly states Newton's second law of motion? Select one: a. The net force acting on an object is equal to the mass of that object times its acceleration. b. None of the above is correct. c. An object in motion moves in a parabolic trajectory unless acted upon by a net force. d. Forces occur in matched pairs that are opposite in magnitude and equal in direction. e. Every object retains its state of rest or its state of uniform straight-line motion unless acted upon by a balanced force.

A child is playing with a ball on a level surface. She gives the ball a push to get it rolling, then the ball rolls a short distance before coming to a stop. Which of the following explains why the ball slows to a stop? a. the child stopped pushing it b. the speed is proportional to the force c. there must have been some force on the ball opposing the direction of motion d. the net force on the ball was zero, so it wanted to remain stationary

A rock pulled by two cords in the opposite direction moves at a constant acceleration. What can be inferred from the magnitude of the forces acting on the rock? a. The rock is accelerating, therefore the forces must be balanced for it accelerate. b. The direction of the force tells us that the magnitude of the forces are unequal. c. The body is moving at constant acceleration, therefore the forces are balanced and the magnitudes are the same. d. These forces did not cancel each other. The magnitude of the forces are not the same. e. No Answer

According to Newton's 1st law of motion, if the net force acting is zero, ______________. a. an object at rest continues at rest b. a moving object increases its speed c. a moving object slowly comes to rest d. an object at rest starts to move with a positive acceleration

Q5. Two cars have the same engine and wheels. It is determined experimentally that both cars produce the same force over a 100 meter course. Car A can accelerate twice as fast as Car B. Explain this result using Newton's Second Law. Q6. Michele kicks a 0.75 kg ball with a 45 N force. What is the acceleration of the ball? Q7. Fill in the blanks in the table below, submit your results in the text box by letter [3(a), (b), (c), etc.]: (c) (f) (g) Force (N) +9.3 x 10¹2 N +2.1 x 105 N (i) -15 N +22 N -150 N -225 N (b) (d) (h) mass (kg) 3.0 kg 8.4 x 10³ kg 2.8 x 10-6 kg 67 kg (j) 19 kg 128 kg acceleration (m/s²) (a) +5.5 m/s² -2.0 m/s² +6.2 x 10³ m/s² (e) -1.2 x 108 m/s² -9.8 m/s² -9.8 m/s² -9.8 m/s² -9.8 m/s²

3. Is it possible for a body to move in a constant speed but a variable velocity? 4. When a body has a constant acceleration, does the direction of its velocity change or not? If yes, give one of your examples. 5. If an object is acted on under several forces, does the object have to have acceleration? 6. Does the direction of the net force acted on a body and the direction of motion of the body have to be the same? B. Problems 1. A net force of 21.6N (1N=kg•ms?) accelerates an object at 10.8 ms?. What is the mass of the object? (m = 2 kg) 2. An object moves according to the equation of motion 7() = (3+ 41')i + (6e +8r')+3k Find: (i). The initial position of the object; (r(0) =3 k) (ii). The velocity of the object at t=2 second and the angle with z-axis also at t =2 s. (ii). The magnitude of its acceleration at any moment. (hint: find acceleration by dt and then using 3. A force acting on an object has an angle of % with the object's displacement. (i) Suppose the magnitude of the force…