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CBSE Class 9 Answered

A ball of mass 0.25kg is thrown upwards with a velocity of 10m/s at what height it's kinetic energy become 10J

Asked by hy0831422 | 21 Dec, 2019, 11:37: AM
Expert Answer
Kinetic energy=10 J 
As the ball is thrown upward, and when it reaches maximum height the kinetic energy is completely convertes to potential energy.
Thus, at maximum height
Kinetic energy =potential energy = 10 J
P.E. = mgh
10 = 0.25 × 9.8 × h 
h = 4.08 m 
Answered by Shiwani Sawant | 23 Dec, 2019, 12:58: AM
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