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Study Guide
Forces Test SG
| Description | Answer |
|---|---|
| force that pulls objects towards each other | gravity |
| product of an object's mass & velocity transfer of energy from one object to another | momentum |
| tendency of an object to resist any change in motion | inertia |
| Newton's first law states, "An object in motion will continue in motion." Why does an object stop? | friction& gravity |
| What is the net force of a balanced force? | 0 |
| What is the net force of an unbalanced force | greater than 0 |
| WHat is the difference between weight and mass? | mass- balance weight- gravity |
| Why does mass not make a difference in free fall? | all accelerate at the same rate regardless of mass |
| How does gravity affect objects that are moving horizontally? | objects will hit the ground at the same time (pulls objects down) |
| How is mass related to inertia | more mass greater inertia |
| How is mass related to momentum? | the more mass more momentum |
| What happens to the momentum of 2 objects after they collide? | energy is absorbed or transferred from one object to another |
| What acceleration does all objects free fall? | 9.8 meters per second squared 32ft. per sec. squared |
| occurs when a solid object moves through a fluid Examples- surfing& swimming | fluid friction |
| friction that occurs when one solid surface slides over another examples- iceskating skiing | sliding friction |
| friction that acts on objects that aren't moving examples- cup table | static friction |
| when an object rolls across a surface examples- bicycle skateboards | rolling friction |
| Newton is perhaps most famous for what? | three laws about objects in motion and the forces that act on them |
| Newton's work wrote them and called them what? | Newton's laws of Motion |
| Newton's first law f motion concerns | inertia |
| objects that are still remain | still |
| objets that are moving | continue moving with a constant velocity |
| Newton's second law concerns | acceleration |
| A bowling ball is more difficult to do what than a tennis ball | throw |
| Newton's third law of Motion is what | the motion of action and reaction |
| when you hit a baseball with an aluminum bat | the ball has another equal and opposite reaction |
| Inertia lab | pennies |
| Acceleration depends on | he object's mass and on the net force acting on it |
| An object moving at a contsant velocity | will continue moving unless acts don by an unbalanced force |
| if one object exerts the second object exerts force of equal strength in the opposite direction on the first object | 3rd law |
| mass times velocity = | momentum |
| the equation for newton's second law is... | forces= mass times acceleration |
| golf ball lab | 3rd law-momentum |
| Momentum equation is... | mass times velocity = momentum |
| golf ball lab | newton's 3rd law |
| rocket lab | newton's second law |
Created by:
ewoodham
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