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# Physics Chap. 2 Test

### Chapter 2 end quarter test review; Grade 9

Mass The amount of matter in an object
Time of impact Time in which a collision takes place; if it is increased, the force of impact will decrease
Velocity Also known as speed, how quickly an object is covering distance; The slope of a distance vs. time graph
Impulse Changes the momentum of an object; force applied x time of impact (Ft)
Momentum Interia in motion; product of mass and velocity; Momentum= Mass*Velocity
Acceleration Rate at which velocity changes
Crush/ Crumple Zone Area of car intended to collapes to increase the time of impact,thus decreasing the force and deceleration
Net Force Sum of all the forces actinmg on an object
Newton's 2nd Law F=ma; relationship between force, mass + acceleration force and acceleration are directly related
Change in Momentum Caused by an impluse (Ft)
Created by: Tierney

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