Question

the mass of an object with 500j of kenetic energy moving with a velocity of 5 m/s is

Answer 1

kinetic energy = k.E = 500
velocity  = V=  5
mass = M =?
K.E = 1/2 x (M)(V*2)
500 = 1/2 x (M)(5*2)
500 x 2 = M x (25)
1000 /25  =  M
M =  40 kg