What is the approximate ratio of the sun's mass to the combined masses of all the planets?

Many machines- including inclined planes such as ramps- increase the strength of the force put into the machine but decrease the distance over which the force is applied.

Identify the forces that contribute to the centripetal force on the object in each of the following examples: a. a bicyclist moving around a flat, circular track b. a bicycle moving around a flat, circular track c. a racecar turning a corner on a steeply banked curve

Velocity is a description of both speed and direction, therefore it - a vector - a force arrow - the same as acceleration - a magnitude