physics forces and motion
- Created by: maxullman
- Created on: 19-12-14 11:42
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- Forces and Motion
- Mass,Weight and Gravity
- gravity it gives everything a weight
- gravity keeps satellites in orbit
- mass is the amount of stuff in the object and its the same anywhere in the universe
- weight is caused by the pull of gravity
- weight is measured in newtons
- mass is measured in kilograms
- weight = mass X gravitational feild strength or W = M X G
- Forces and Friction
- 1. gravity or weight acting straight downwards
- 2. reaction force from a surface usually acting straight up
- 3. electrostatic force direction depends on charge
- 4. thrust push or pull speeding something up
- 5. drag air resistance or friction slows down
- 6. lift
- 7. tension
- Mass,Weight and Gravity
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