| A | B |
|---|
| Force | push or pull |
| Mass | amount of a substance |
| Acceleration | rate of change of velocity |
| Velocity | constant speed |
| First Law of Motion (Newton) | an object at rest will remain at rest and an object in motion will remain in motion until an outside force acts on the object |
| Inertia | the tendency of an object at rest to remain at rest or an object in motion to remain in motion |
| Second Law of Motion (Newton) | states the relationship among force, mass, and acceleration; acceleration = force/mass |
| Third Law of Motion (Newton) | for every action there is an equal and opposite reaction |
| The more massive an object is | the more inertia is has (or the more it resists a change in motion) |
| According to the second law of motion, an increase in force on a given mass will cause | an increase in acceleration |
| When you walk, your feet push against the ground, and the ground pushes against your feet. | every action has an equal and opposite reaction |
| When a golf ball is placed on a tee, it will remain there until the golfer strikes the ball. | a large mas needs a large force to move it |
| Morris pushed a car out of the garage. He pushed as hard as he could, but the car moved only very slowly. | a large mass needs a large force to move it |
| Jane was standing in a bus when the bus suddenly started. She fell backwards toward the back of the bus. | Jane was at rest and her body resisted the change in the bus's motion |
| When pushing a penny across a table, the penny will slide to the edge of the table and fall off. However if the force is not strong enough, the penny will stop on the table. The force that stops the penny on the table is | friction |
