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use the ke and gpe equations to solve for speed or height depending on the situation.

a 1,000-kg car has 50,000 joules of kinetic energy. what is its speed?
( show work)

The density of a liquid could be found by using

The coefficient of friction is a number that represents the resistance to sliding between two in contact with one another.

Ablock having mass m slides down an inclined plane. the force of friction between the block and the inclined plane is f, the block's weight is m g, and the normal force is n. (a) draw a free – body force diagram showing the forces acting on the block. (b) write down all relevant newton’s equations for a given situation.