8th Grade Ch 8 Study Guide Graded A+

velocity {Ans: The momentum of an object is in the same direction as its}attract each other {Ans: The law of universal gravitation states that any two objects in the universe that have mass, without exception,}weight {Ans: The force of gravity on a person or object at the surface of a planet is known as}True {Ans: When the only force acting on a falling object is air resistance, the object is said to be in free fall.}friction {Ans: The force that one surface exerts on another when the two surfaces rub against each other}gravity {Ans: the force that pulls objects toward Earth}