The kinetic energy of a body is 10 joules. what will be its new kinetic energy when its speed become double.
Answers
Answered by
11
Ke = 1/2 mv²
when v = v
then Ke = 10
if v = 2v
then Ke = 1/2 m (2v)²
= 1/2 m 4v²
we know that 1/2 mv² = 10
if 1/2 mv² is multipled by 4 we will get new Ke
=> Ke = 4×10J = 40J
when v = v
then Ke = 10
if v = 2v
then Ke = 1/2 m (2v)²
= 1/2 m 4v²
we know that 1/2 mv² = 10
if 1/2 mv² is multipled by 4 we will get new Ke
=> Ke = 4×10J = 40J
Similar questions