A 15.2 kg object travelling with a velocity of 7.3 m/s north collides with a 10.0 kg stationary object. After the
collision, the 15.2 kg object travels with a velocity of 4.3 m/s 20° E of N.
a. What is the velocity of the 10.0 kg object after the collision?
b. Is the collision elastic or inelastic? Show your work