The mechanical advantage of a wheel and axle is the ratio of the radius of the to the of the axle

Aball has an initial velocity of 3 m/s. if there is no friction, what is the highest it could roll?

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?