A stone of mass 200 g isthrown up vertically upwards with a velocity of
60 m/s What is the potential energy and kinetic energy after 5 seconds take 10m/s^2
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Explanation:
Every second the velocity decreases by 9.8 m/ s.
In 5 s , the velocity decreases by 9.8*5 = 49 m/s
It's velocity after 5 s is 30 - 49 = -19 m/s.
Kinetic energy is 0.5 m v^2.
= 0.5* 0.2 *19*19= 36.1 joule.
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