| A | B |
|---|
| Vector has | magnitude & direction |
| Scalar quantity | magnitude |
| Not a projectile | ball rolling |
| Balls thrown horizontal and dropped | hit ground same time |
| Ball thown __ goes farthest | 45 degrees |
| Law of inertia applies | moving & nonmoving objects |
| A ball thrown in a vacuum needs | no force to keep moving |
| net force of 10N vs 30 N opposites | 20 newtons |
| Friction acts | against an objects movement |
| Weight of 1 kg of metal | 9.8 N |
| net force of 10N vs 30 N together | 40 newtons |
| Acceleration is produced by | forces |
| Pressure | force per area |
| 200N girl on swing has | 100 N on each rope |
| 1000kg car goes 2m/s2. Acceleration is? | 2000 netwons |
| F= 2000N a=2 m/s2 what is the mass? | 1000 kg |
| A 20,000kg plane has two engines of 500N each. What's acceleration? | 20 m/s2 |
| 2 kg brick accelerates 6 m/s2. what's force? | 12 newtons |
