Question

An object has a kinetic energy of 233 J and a momentum of magnitude 20.4 kg·m/s. Find the speed and the mass of the object.

Answer 1

Kinetic energy (K.E) = 1/2 mass x velocity²
Momentum (P) = mass x velocity

K.E = 1/2 Pv
233 = 1/2 x 20.4 x v
v = 22.8 m/s

20.4 = 22.8m
m = 0.89 kg