Recent content by bballcool34

A billiard ball has an initial speed of 5 m/s and it collides with another billiard ball of the same mass initially at rest. If the speeds of the two billiard balls are 3 and 4 m/s, then a) momentum was conserved but not kinetic energy b) kinetic energy was conserved but not momentum c)...

Thanks for the reply. One thing that is still confusing to me though is how, from the problem, I can know that tangential acceleration is constant, but centripetal acceleration is increasing?

A small bug is sitting on the edge of a uniform disk of mass 2.5 kg and radius 20 cm initially at rest. There is a massless string wrapped around the disk and the coefficient of friction between the bug and the disk is u= 0.4. The string is then pulled with a constant tension of 4 N. a) What...

Here's the question: Two children are playing a game in which they try to hit a small box on the floor with a marble fired from a spring-loaded gun that is mounted on a table. The target box is horizontal distance D = 2.20 m from the edge of the table. Bobby compresses the spring 1.1 cm, but...