4) If a person is riding a bike and want to slow down, they use the brakes. This is an example of which of the following?
A: Frame of reference
B: Motion
C: Deceleration
D: Velocity
5) Which of the following may be causing trouble for a person moving a chair across the room?
A: Friction
B: Velocity
C: Motion
D: Speed
6) The boy sat in the car so long it felt like he was no longer moving, but then he saw a tree that was beginning to get further and
further away from his view. The tree is which of the following?
A: Friction
B: Frame of reference
C: Velocity
D: Gravity
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