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- 1. Multiple Choice
1. What is the difference between displacement and distance? (What line on the image below represents displacement? What line represents distance?)
displacement is how far an object is from its original position (represented by the blue line on the image above)
displacement is how far an object has traveled in total (represented by the red line on the image above)
- 2. Multiple Choice
2. One student is walking at 1.25 miles per hour to the east. Another student is walking at 1.25 miles per hour to the south. Which statement describes the movement of of the two students? (Remember, they are traveling in different directions: east vs. south)
They have the same speed and the same velocity.
They have the same speed but different velocities.
- 3. Multiple Choice
3. Use the graph showing the motion of Peter over time to answer the question below. Which statement correctly compares Peter's motion during the first 10 minutes to his motion during the last 10 minutes of his journey?
Peter is going faster and in a different direction during the first 10 minutes than in the last 10 minutes. Peter travels for 45 minutes during his journey.
Peter is going slower and in a different direction during the first 10 minutes than in the last 10 minutes. Peter travels for 50 minutes during his journey.
- 4. Multiple Choice
4. What does a horizontal line on a position-time graph indicate about Peter? (Hint: look at where the green arrow is pointing on the graph)
Peter is accelerating. (The horizontal line on the graph indicates that Peter's velocity is changing for those 20 minutes.)
Peter remains still. (The horizontal line on the graph indicates that Peter stayed at the same location 12 km from his home for those 20 minutes).
- 5. Multiple Choice
5. A force acts on an object. Which option describes an action that could prevent the object from moving?
a force applied in the opposite direction with the same magnitude at the same time could prevent the object from moving
a force applied in the same direction with a greater magnitude at the same time could prevent the object from moving
- 6. Multiple Choice
6. Which option below is the force with the greatest magnitude?
the force needed to lift a chair
the force needed to lift a textbook
the force needed to lift a pencil
- 7. Multiple Choice
7. A box is against a wall. A person pushes on the box, but the box does not move. Is this situation an example of a force?
No, this is not an example of a force because a force pulls an object.
Yes, this is an example of a force because a force is a push or a pull.
No, this is not an example of a force because the box did not move.
- 8. Multiple Choice
8. Which situation describes a Non-Contact force changing the speed of an object?
a ball accelerating as it rolls down a hill due to the non-contact force of gravity
a bicycle accelerating as the rider pedals more quickly
a drawer opening when a user pulls the handle
- 9. Multiple Choice
10. When you trip, your foot stops, but your body continues to move forward. Which statement best explains why this happens?
The unbalanced force that stops your foot does not act on the rest of your body.
No forces are involved when this happens.
- 10. Multiple Choice
11. A bowler throws a ball down the lane toward the pins. The ball reaches the pins and slowly moves through them, knocking down the center pins but leaving the end pins standing. The bowler wants the ball to reach all the pins. Which changes should the bowler make so that the ball has a greater acceleration?
The bowler should choose a ball with less mass or throw the ball with more force.
The bowler should just keep trying with the same ball.
- 11. Multiple Choice
12. In which situation does the reactive force between two colliding objects cause a PHYSICAL change?
the exhaust from a rocket thrusting the rocket away from the ground causes a PHYSICAL change
a baseball player swinging a bat and hitting a baseball, causing the bat to shatter causes a PHYSICAL change
two bumper cars at an amusement park colliding, causing both cars to change direction causes a PHYSICAL change
- 12. Multiple Choice
13. A sledgehammer hits a wall. How do the hammer and the wall act on each other?
The hammer and the wall exert forces on each other that are equal in magnitude and in the same direction.
The hammer and the wall exert forces on each other that are equal in magnitude but in opposite directions.
- 13. Multiple Choice
14. In T-ball, batters hit a ball that is placed on a T-shaped stand. Batter A hits the ball by swinging the bat from a resting position on his shoulder. Batter B hits the ball with the bat directly behind it. Which batter will likely hit the ball the greater distance?
Batter A will likely hit the ball farther because batter A’s bat likely has a greater acceleration when it hits the ball, so the bat will hit the ball with a greater force
Batter B will likely hit the ball farther because batter B’s bat likely has a greater acceleration when it hits the ball, so the bat will hit the ball with a greater force.
- 14. Multiple Choice
15. A musician hits a drum with a drumstick. What is true about the collision forces between the drum and drumstick?
No forces exist between the drum and drumstick.
The drumstick exerts a force on the drum in the direction of the drumstick’s motion. The drum exerts the same force on the drumstick but in the direction opposite of the drumstick’s movement.
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