AP Physics 1· difficulty 3/5
A block sliding up a rough incline () starts at . Using , after stopping it
Stays at rest.
Slides back down with the same magnitude of acceleration.
Slides back down slower than it went up.
Slides back down faster than it went up.
Explanation
On the way down, friction reverses direction (opposing motion). Net along incline: — smaller than the upward deceleration .
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