Question

the kinetic energy of an object is mass m, moving with a velocity of 4 ms to the power minus 2 is 16 J what is the kinetic energy when its velocity is doubled

Answer 1

K = 1/2mv^2

1/2m x = 16joul

when velocity is double then

1/2m x 2 (4^-2)^2 = 512joul