Question

An impulse i given to a body changes its velocity from v1 to v2

Answer 1

Explanation:

I = impulse given to a body of mass m 

 = change in the momentum of the body 

 = mv2 - mv1

Increase in kinetic energy of the body 

 ΔKE = 1/2 mv2² - 1/2 mv1² 

         = 1/2 m (v2+v1) (v2-v1)

         = I * (v2+v1)