What is the difference between speed and velocity? a. velocity describes speed with direction. b. velocity describes direction with position. c. velocity is used in space; speed is used on earth d. there is no difference.

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

Which is the best for showing percentages of different types of cars sold(gas hybrid , electric , other ) in the united states ?