A 10.0-kilogram ball rolling along a flat surface starts up a hill. If the ball reaches a height of 1.0 meters, what was its initial speed?

How does convection affect our atmosphere? our layers of earth? our oceans?

Blank liquids and gases exert a buoyant force on objects placed in them

A1,700kg car is being used to give a 1,400kg car a push start by exerting a force of 140n the impulse on the smaller car during the 30.0s of contact is +670kg*m/s. what is the impulse of the smaller car on the larger car? -814 kg*m/s 0kg *m/s -670kg*m/s -550kg*m/s