3. A ball rolls downhill with a constant acceleration of 4 m/s2. If it started from rest, its displacement at the end of 3 seconds is__. 4. A ball rolls downhill with a constant acceleration of 4 m/s2. If it started from rest, how long will it take to travel 20 meters?
3. A ball rolls downhill with a constant acceleration of 4 m/s2. If it started from rest, its displacement at the end of 3 seconds is__. 4. A ball rolls downhill with a constant acceleration of 4 m/s2. If it started from rest, how long will it take to travel 20 meters?
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3. A ball rolls downhill with a constant acceleration of 4 m/s2. If it started from rest, its displacement at the end of 3 seconds is__.
4. A ball rolls downhill with a constant acceleration of 4 m/s2. If it started from rest, how long will it take to travel 20 meters?
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