Question

15) The kinetic energy of a body is
a) mv2
b) a my
my2
d) 2mv2​

Answer 1

Your Solution:

A body in motion is said to possess kinetic energy. The energy possessed by a body by virtue of its state of motion is called kinetic energy.

K.E = 1/2mv²

where, KE is the kinetic energy, m is the mass of the body and v is the velocity of the body, m is a scalar quantity and v is a vector quantity. In the expression, we see that velocity or v is squared. We know that the square of a vector quantity is a scalar. Therefore, kinetic energy is a scalar quantity.

I hope you got it.

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