Question

A boy weights 60 kg and he runs at a speed of 3 m/s.What is his Kinetic energy.

Answer 1

Explanation:

Question :

The momentum of a boy of 60 kg weight running at 10 m/s is.

Solution :

Given :

Velocity of the body = 10m/s

Mass of the body = 60 kg

To Find :

It's Momentum

Solution :

As we know that momentum is defined as the product of the given body's mass and the velocity gained by it .

p = mv

Momentum = 60kg × 10 m/s = 600 kg m/s

(usper nirvar hai okkk

Answer 2

Answer:

weight of boy= 60 kg , speed= 3m/s

Explanation:now,

kinetic energy = 1/2 $mv{2}$

                          =1/2 60×3

                          =1÷2×180

                         =  1×90

                         =   90J

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