Question 1

The amount of matter in an object; SI unit for measuring mass is the kilogram.

Accepted Answer

Mass

Question 2

Mass in motion; a measure of how hard it is to stop the object (p = m*v ---- kg x m/s).

Accepted Answer

Momentum

Question 3

the beginning energy is equal to the ending energy

Accepted Answer

Law of Conservation of Momentum

Question 4

A measure of the force of gravity pulling down on your body; unit for measuring weight is the Newton.

Accepted Answer

Weight

Question 5

A situation in which two objects in close contact exchange energy and momentum.

Accepted Answer

Collision

Question 6

Two objects bounce off each other.

Accepted Answer

Elastic collision

Question 7

Two objects sticking to each other.

Accepted Answer

Inelastic Collision

Question 8

Force that opposes motion between two surfaces.

Accepted Answer

Friction

Question 9

Force that pulls all objects together

Accepted Answer

Gravity

Question 10

The speed of the object and the direction of its motion.

Accepted Answer

Velocity

Question 11

occurs only when air resistance does not affect the motion of a falling object

Accepted Answer

free fall

Question 12

the path that a thrown object follows

Accepted Answer

projectile motion

Question 13

an object in motion remains in motion unless acted upon by an unequal force

Accepted Answer

newton's first law of motion

Question 14

9.8 m/s squared

Accepted Answer

terminal velocity

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