forces and dynamic
by amaresh ratnaraja
1. friction is a forces which opposes motion
1.1. friction enables us to walk
1.2. ways to reduce friction
1.2.1. apply lubricant
1.2.2. use a ball-bearing
1.2.3. use a smooth surface like ice
2. resultant force
2.1. causes a moving object to
2.1.1. stop moving
2.1.2. move faster
2.1.3. slow down
2.1.4. change direction
3. free-body diagram
3.1. shows forces acting on a single body
4. the change in velocity calculated by force/mass
5. gravity
5.1. gravity is the force of attraction between objects
6. mass
6.1. mass is the amount of matter in an object
6.1.1. force/acceleration
6.1.1.1. New node