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Physics Chap. 2 Test
Chapter 2 end quarter test review; Grade 9
Question | Answer |
---|---|
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) |