Assuming the positive direction is to the right, find, just after the collision,
Velocity of the ball
Velocity of the block
I don’t know how to start this one, never the less do it.
2. A body of mass 2.4 kg makes an elastic collision with another body at rest and continues to move in the original direction but with one-fourth of its original speed. The struck block has a mass of 1.44kg.
What is the speed of the two-body center of mass if the initial speed of the 2.4 kg body was 4.5 m/s?
I plugged in the numbers into the equation (m1v1+m2v2)/(m1+m2) and got 3.234375 which I know is wrong. Don’t even know how got v2.