Question

an object of mass 2 kg is having 20 joule kinetic energy when the velocity of the object​

Answer 1

Answer:

kinetic Energy =( 1/2) *m *v *v

20= (1/2)*2*v*v

20= v*v

2√5m/s= v

Answer 2

Answer: v= under root 20 m/s

Explanation:

Given

K.E.= 20 j

m = 2 kg

v=?

We know that

K.E.= 1/2mv^2

20= 1/2×2×v^2

20=v^2

v= under root 20 m/s