A disc of mass 10 g can remain in air, stationary in a horizontal position, if 10 marbles hit the disc per second from below. Each marble has a mass of 5 g. find the velocity with which the marbles hit the disc. Assume that the marbles hit the disc perpendicularly and rebound from the disc perpendicularly as well.

A disc of mass 10 g can remain in air, stationary in a horizontal posi

1.	A disc of mass 10 g can remain in air, stationary in a horizontal position, if 10 marbles hit the disc per second from below. Each marble has a mass of 5 g. find the velocity with which the marbles hit the disc. Assume that the marbles hit the disc perpendicularly and rebound from the disc perpendicularly as well.
Answer» ANSWER :0.98 m`CDOT s^(-1)`