Homework Help: physics

Posted by Chris on Saturday, March 3, 2007 at 9:15pm.

A cart of mass 340 g moving on a frictionless linear air track at an initial speed of 1.2 m/s undergoes an elastic collision with an initially stationary cart of unknown mass. After the collision the first cart continues in its original direction at .66m/s.
a) what is the mass of the second cart?
b)What is its speed after impact?
c)What is the speed of the two-cart center of mass?

I know that in an elastic collsion momentum and energy is conserved. What would be the equation i would use for this problem? I can't figure out the equations for a) and b) but I think for
c) would I use V= (m_1* v_1 + m_2 *v_2)/(m1+m2)

No one has answered this question yet.

Answer this Question

Related Questions

physics - A cart of mass 340 g moving on a frictionless linear air track at an ...
Physics -Conservation of Momentum- - 1) A 1 kg mass moving at 1 m/s has a ...
Physics -Conservation of Momentum- - 1) A 1 kg mass moving at 1 m/s has a ...
Physics ~really need help!~ - 1) A 1 kg mass moving at 1 m/s has a totally ...
Physics - An air-track cart of mass 0.10 is moving with a speed 1.2 to the right...
Physics Help - A small, 200 g cart is moving at 1.50 m/s on an air track when it...
physics please help - suppose a cart of mass m = 969 g is initial moving at ...
physics - A small, 300 g cart is moving at 1.90 m/s on an air track when it ...
physics - A small, 300g cart is moving at 1.60m/s on an air track when it ...
physics - a 4.0-kg cart rolling east on a level, frictionless track at 14 m/s ...

For Further Reading

First Name:
School Subject:
Answer: