A 1.94-kg object moving to the right at 5.90 m/s collides head-on with a 3.89-kg object that is initially at rest. After the collision, the 1.94-kg object is moving to the left at 1.21 m/s. Calculate the velocity of the 3.89-kg object after the collision.

Calculate the energy lost in the collision.

What is the coefficient of restitution for these objects?

Question

A 1.94-kg object moving to the right at 5.90 m/s collides head-on with a 3.89-kg object that is initially at rest. After the collision, the 1.94-kg object is moving to the left at 1.21 m/s. Calculate the velocity of the 3.89-kg object after the collision. 

Calculate the energy lost in the collision. 

	
What is the coefficient of restitution for these objects?

anonymous · Answer

For the first part of the problem, momentum of the system is conserved. Therefore, use the equation $$m_1v_1 + m_2v_2 = m_1v^'_1 + m_2v^'_2$$
so you get $$v^'_2 =(m_1v_1 - m_1v^'_1)/m_2$$. Plug and chug!

anonymous · Answer

sorry, i would help with the rest, but i'm sleepy :( Maybe later.