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# Mechanics quick query Watch

1. When it comes to kinematics, projectiles (at an angle to horizontal) is the motion always symmetrical provided it's acting freely under gravity and starts and stops at the same level?

For example if a ball is projected from the ground and it travels up then back down again, is the time it takes to travel up the same as it does to travel down? In which case if I find the time it takes to reach its maximum height (at v=0) then can I double that time to find the total time of flight?

thanks
2. Yes, the motion is always symmetrical about the highest point (provided it starts and lands at the same vertical level).
3. (Original post by Coco-Berry Drop)
When it comes to kinematics, projectiles (at an angle to horizontal) is the motion always symmetrical provided it's acting freely under gravity and starts and stops at the same level?

For example if a ball is projected from the ground and it travels up then back down again, is the time it takes to travel up the same as it does to travel down? In which case if I find the time it takes to reach its maximum height (at v=0) then can I double that time to find the total time of flight?

thanks
4. Thanks guys

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Updated: December 27, 2010
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