What is the mechanical advantage of a ramp that is 20 meters long and 6 meters tall?

A12-kg bag of groceries is tossed onto a table at 4.0 m/s and slides to a stop in 2.2 s . modify the equation fδt=δ (mv) to find the force of friction.

Anne applies a force on a toy car and makes it move forward. what can be said about the forces acting on the toy car at the moment anne applies the force?

If the chemical properties of a substance remain unchanged and appearance or shape of a substance changes it is called a ?