a man standing on the top of tower throws a ball vertically up with certain velocity. he also throws another ball vertically down with the same speed. neglecting air resistance, which ball will hit the ground with higher speed?
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The balls will reach their maximum height in the air and then hit the ground at the same speed. However, if the man throws the second ball forward, then the first ball will have higher speed due to a greater altitude.
Since you just want to compare final vy , the initial velocity of vx doesn’t matter. The higher the maximum altitude (the point where vy is 0 ) the longer the time it takes to reach the ground, and hence the greater the velocity.
If you throw the ball in vertical direction, the ball will reach the highest possible altitude it can reach at that applied force. Therefore, the first ball will have a greater velocity when it reaches the ground.
Explanation:
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