Period%202%20Question%201

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Period 2Question 1
2
The earth exerts a gravitational force on a ball,
pulling it down. Does the ball exert a
gravitational force on the earth?

• a) No, it does not, since the earth is not moving
  towards the ball
• b) Yes, but the ball attracts the earth with much
  smaller force than the earth attracts the ball
• c) The ball will exert a force on the earth only
  at the moment when it touches the earth surface
• d) Yes, and the force acting on the earth is
  equal in magnitude to the force acting on the ball

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Period 2Question 2
4
Riding an elevator moving upward with a constant
speed, you begin the game of darts. Do you have
to aim your darts (as compared to playing in the
elevator which is not moving)

• a) higher
• b) lower
• c) same
• d) none of the above

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Period 3Question 1
6
A small car collides with a large truck. The
force applied on the car as compared to the force
applied on the truck is

• a) smaller
• b) the same
• c) larger
• d) depends on the angle of collision

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Period 3 Question 2
8
Riding an elevator moving upward with a constant
acceleration, you begin the game of darts. Do you
have to aim your darts (as compared to playing in
the elevator which is not moving)

• a) higher
• b) lower
• c) same
• d) none of the above