what will be the kineic energy of a body when its mass is made 4 times and velocity is doubled?
Kinetic energy, EK = 1/2 * m * v2 Equation 1
When the mass of the body is quadrupled, new mass, m1 = 4m and v' = 2 v Equation 2
New kinetic energy , EK 1 = 1/2 * m1 * v'2
= 1/2 * 4m * 4v2 From Equation 2
= 1/2 * m * v2 * 16
EK 1 = EK * 16 From Equation 1
Thus, when mass is quadrupled and velocity is doubled , kinetic energy increases by 16 times. Experts, and friends, like please :D