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pishuonlain [190]
3 years ago
5

A boy throws a ball straight up with a speed of 21.5 m/s. The ball has a mass of 0.19 kg. How much gravitational potential energ

y will the ball have at the top of its flight? (Assume there is no air resistance.)
Physics
2 answers:
monitta3 years ago
7 0
0 because on the top of it flight will stop for a moment
Lady bird [3.3K]3 years ago
7 0
So first you have to determine what the maximum height of the object will be.
21.5-9.8t=0
This equation will give you the time at which the ball hits max height
t= 2.194 sec
So now use the time and plug it in to the velocity equation so 21.5•2.194= 47.171
So the max height is 47.171 which we can use for the gravitational potential energy
The weight (.19) times the height (47.171) is 8.96249 and that is the answer
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