Question

1 If it goes up to a maximum height of
change in kinetic energy of the ball.
A block is thrown upwards with a K.E. of 2J. If it goes up to a ma
2m, find the mass of the block.
me under
the mass of Ball B. Th
Aic double the mass of Ball B. The ball A moves​

Answer 1

Thus, the mass of the body will be m = 2 kg.

Explanation:

Correct statement:

What's the mass of an object which is thrown upwards with a kinetic energy of 20 J and reaches a maximum height of 2m?

When the body reaches the height h = 2 m, the potential energy will be such that

Potential energy = Kinetic energy =  20 Joule

so,

P.E = mgh = 120 J

m = 20/gh

 m = 20/(10 x 1)   = 2 Kg

Thus, the mass of the body will be = 2 kg.

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