Can an object reverse its direction of travel
while maintaining a constant acceleration?
1. No; if the acceleration is constant, the
direction of the speed remains unchanged.
2. Yes; a ball tossed upward reverses its
direction of travel at its highest point.
3. Yes; a ball thrown toward a wall bounces
back from the wall.
4. All are wrong.
5. No; the direction of the speed is always
the same as the direction of the acceleration.
Physics - 1D Acceleration
2009-10-05 1:40 pm
回答 (1)
2009-10-05 3:49 pm
✔ 最佳答案
The answer is 2.When the ball is being tossed upward, its acceleration is always pointing downward, it is g, a constant.
So, the acceleration is a constant.
As it reaches the highest point, its velocity will change from upward to zero to downward.
In this case, its direction of travel will reverse.
參考: Physics king
收錄日期: 2021-04-19 15:55:34
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