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science Force
| Question | Answer |
|---|---|
| Force | pull or push |
| Net Force | overall force acting on an object when all the forces are combined …if net force is 0 both objects are balanced….jump ball in BB |
| Inertia | the resistance of an object to a change in the speed or the direction of its motion…seatbelts |
| Newton’s First Law | objects at rest remain at rest, and objects in motion remain in motion with the same velocity unless acted upon by an unbalanced force |
| Newton’s Second Law | the acceleration of an object increases with increased force and decreases with increased mass…..pushing an empty shopping cart vs. a full one |
| Force = | mass X acceleration…..f=ma |
| Calculate Acceleration | a= f/m |
| Calculate Mass | m=f/a |
| Centripetal force | force that keeps an object moving in a circle….ice skater spinning in circle |
| Newton’s Third Law | every time one object exerts a force on another object, the second object exerts a force that is equal in size and opposite in directions back on the first object….rollerskater pushing another person on skates |
| Momentum | measure of mass in motion, is the product of its mass and its velocity |
| Calculate Momentum | mass X velocity |
| Collision | two objects in close contact exchange enerft and momentum… car bumps into another |
| Conservation of Momentum | – the total momentum of a system of objects does not change, as long as no outside forces are acting on the system…..bumper cars |
Created by:
mjtrent
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