Physics Exam II Review

# Physics Exam II Review - Physics Exam II Review Relative...

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Physics Exam II Review Relative velocity 1. If you are carrying a ball and running at constant speed and wish to throw the ball so that you can catch it as it comes back down, how should you throw the ball? 2. As a projectile moves in its parabolic path when are the velocity and acceleration vectors perpendicular to each other? 3. Can a particle have a constant velocity and a varying speed? Chapter 4 – The Laws of Motion 4. You are talking by interplanetary telephone to a friend who lives on the moon. She tells you she has just won 1 Newton of gold in a contest. Excitedly, you tell her that you entered Earth’s version of the same contest and also won 1 Newton of gold? Who is richer? ( Quick Quiz 4.4 ) 5. True or false? (a) It’s possible to have motion in the absence of force. (b) If an object is not moving, no external force acts on it. ( Quick Quiz 4.1 ) 6. True or false? (a) If a single force acts on an object, the object accelerates. (b) If an object experiences an acceleration, a force acts on it. (c) If an object experiences no acceleration, no external force acts on it. ( Quick Quiz 4.2 ) 7. A ball is held in a person’s hand. Identify the external forces acting on the ball and the reaction on each. ( Concept question 1 ) 8. A rubber ball is dropped onto the floor. What force causes the ball to bounce? ( Concept question 4 ) 9. If a car moves with a constant acceleration, can you conclude that there are no forces acting on it?

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( Concept question 3 ) 10. A truck loaded with sand accelerated along a highway. If the driving force on the truck remains constant, what happens to the truck’s acceleration if its trailer leaks sand at a constant rate through a hold in its bottom? ( Concept question 18 ) 11. You press your physics textbook flat against a vertical wall with your hand. What is the direction of the
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## This note was uploaded on 10/06/2008 for the course PHYS 10154 taught by Professor Zerda during the Summer '08 term at TCU.

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Physics Exam II Review - Physics Exam II Review Relative...

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