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Motion - Machines
| Question | Answer |
|---|---|
| A push or a pull is called a: | Force |
| What causes an upject to speed up, slow down, or change directions? | Force |
| Forces that are equal and opposite are called: | Balanced Forces |
| Forces that are not equal or opposite are called: | Unbalanced Forces |
| Which type of forces causes a change in speed or direction? | Unbalanced |
| Which type of forces do NOT cause a change in speed or direction? | Balanced |
| What do we call the pulling force of the Earth on an object? | Gravity |
| What do we call the pulling or pushing force created by electrons? | Electricity |
| What do we call the push or pulling force around a magnetic field? | Magnetism |
| What do we call the rubbing force that opposes motion? | Friction |
| Which law of motion states "An object at rest will remain at rest and an object in motion will remain in motion, unless and outside force acts on the object"? | First Law |
| What is the tendency of matter to resist a change in motion? | Inertia |
| Which of Newton’s laws of motion discuss the relationship between mass, force, and acceleration? | Second Law |
| What does Newton’s Third law of Motion state? | For every action there is an equal but opposite reaction. |
| Which of Newton’s laws is demonstrated by blowing up a balloon and then letting it go? | 3rd Law |
| Which of Newton’s laws is demonstrated when you feel pushed forward after a car has stopped suddenly? | 1st Law |
| Which of Newton’s laws explains why more force is needed to push a grown up on a swing rather than a baby? | 2nd Law |
| Newton’s second law of motion explains the relationship between what three things? | Force, Mass, Acceleration |
| When a driver presses on the brakes, your bodies show ____ when they move forwards. | Inertia (1st law) |
| When a force causes an object to move over a certain distance, we say ___ has been done: | Work |
| is lifting up a box off the floor work? | YES |
| Is standing while holding a heavy box work? | NO (no movement) |
| What is the change in position of an object relative to another object? | Motion |
| How is speed calculated? | Distance divided by time |
| How is velocity different from speed? | Velocity includes a direction |
| Is increasing your speed changing the velocity? | YES |
| Is decreasing your speed changing velocity? | YES |
| Is moving at a speed of 10 mph North changing your velociity? | NO |
| Is making a turn changing your velocity? | YES |
| What do we call a change in velocity? | Acceleration |
| What are 3 ways to accelerate? | Increase speed, decrease speed, change directions |
| How do we calculate work? | Force x Distance |
| What can we use to measure forces? | Spring Scale |
| What is the name of Newtons first law of motion? | Inertia |
| What is the name of Newtons second law of motion? | Force = Mass x Acceleration |
| What is the name of Newtons third law of motion? | Action - Reaction |
Created by:
sloanescience
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