An object with a mass of 2.0 kg accelarates 2.0m/s2 when an unknown force is applied to it. what is the amount of the force?

The percent efficiency of a machine can never be 100% (or greater), because in the real world some energy is always converted into a. heat b. work c. input force d. output force

Acup of coffee sits on the dashboard of an automobile. the car goes around a sharp curve. even though you hold the cup still, coffee still splashes out. this can best be explained due to a) density. b) friction. c) gravity. d) inertia.

Properties seen when one one substance changes to another are known as properties