| A | B |
|---|
| What is a force? | a push or pull on an object |
| What can a force make an object do? | speed up, slow down or change direction |
| What is the weight of one newton | a medium sized apple in your stretced out hand |
| What is gravity? | force mass exherts on object |
| What does gravity depend on? | size and distance |
| What is the measure of gravity? | wieght |
| What can magnitism and electricity pull on? | iron, nickel, gadolinius, cobalt |
| What pulls will repel? | light |
| what pulls will attract? | opposite pulls |
| What is electricity? | forces between objects that are electrically recharged |
| What will happen if an object gains an electron? | It will have a negative charge |
| What would happen if an object loses an electron? | it will have a positive charge |
| How do charged objects act? | like magnets |
| What do like charges do? | repel |
| What do opposite charges do? | attract |
| What will happen when forces increase? | decreased distance |
| What can be elocked and what is not? | electricity and magnitism can be elocked and gravity cannot |
| What is friction? | It flows down the motion of an object or keeps it from starting to move. |
| What does work =? | force times distance. |
| What is work measured in? | jewels. |
| what dose 1 jewel =? | 1 newton times one meter, |
| is there any work being done to an object thats not moving? | no |
| what is power? | The rate at which work is done. |
| What does power equal? | work divided by time |
| What is the unit of power? | watts |
| What is newton's first law? | an object in motion will stay in motion unless acted on another force..an object in rest, stays at rest unless acted upon |
| What is newton's second law? | force =mass times acceleration...force equals mass and force is measured in newtons and mass in grams...acceleration is measured in meters per seconds squared |
| What is newton's third law? | for every action there is an equal and opposite reaction |
| What is vibrational motion? | when something moves back and forth |
| What is variable motion? | when something moves in any direction, in any speed, in any time |
| What is circular motion? | something that moves in a circle |
| What is constant motion? | a motion that keeps going and never stops |
| What is periodic motion? | something swinging back and forth |
