Question

A stone is thrown upwards with a kinetic energy of 10 J. If it goes up to a
maximum height of 5 m, find the initial velocity and the mass of the stone.​

Answer 1

Explanation:

Here, kinetic energy of the body, K.E=10 JEk=10J

Height attained by the body, h=5 m

h=5m

When the body attains maximum height, its kinetic energy is converted into potential energy.

P.E=K.E

⟹mgh=10

⟹m=

gh

10

=

10×5

10

=0.2 kg

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