Question

If velocity of a body is twice of previous velocity, then kinetic energy will become

• A. 2 times
• B. $\frac { 1 } { 2 }$times
• C. 4 times
• D. 1 times

Answer 1

Answer: (C)

4 times

Answer 2

Kinetic energy = $\frac { 1 } { 2 } m v ^ { 2 }$ ∴ K.E.v²

If velocity is doubled then kinetic energy will become four times.