A billiard ball rolling across a table at 1.50 m/s makes a head-on elastic collision with an identical ball. Find the speed of each ball after the collision (a) when the second ball is initially at rest, (b) when the second ball is moving toward the first at a speed of 1.00 m/s, and (c) when the second ball is moving away from the first at a speed of 1.00 m/s.

A tennis ball of mass 57.0 g is held just above a basketball of mass 637 g. With their centers vertically aligned, both balls are released from rest at the same time, to fall through a distance of 1.30 m, as shown in the figure below. Į (a) Find the magnitude of the downward velocity with which the basketball reaches the ground. 5.05 m/s (b) Assume that an elastic collision with the ground instantaneously reverses the velocity of the basketball while the tennis ball is still moving down. Next, the two balls meet in an elastic collision. To what height does the tennis ball rebound? 14.23 Find the relative velocities of the basketball and the tennis ball just before collision and then apply the appropriate conservation principles and rules for perfectly elastic collisions to find the tennis ball velocity and the height that the basketball reaches. m Need Help? Read It Master It

A ball moving at 10 m/s makes an off-center elastic collision with another ball of equal mass that is initially at rest. The incoming ball is deflected at an angle of 30° from its original direction of motion. Find the velocity of each ball after the collision.

Two equal mass objects undergo a perfectly elastic collision.  One object is moving with a velocity v and the other is initially at rest.  The collision is not head-on (two dimensional).  Show that the two objects move away from each other perpendicularly (the velocity vectors of the two objects after the collision make a right angle).