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Science, Chapter 12
Newton's 1st, 2nd, & 3rd Laws; Gravity
| Question | Answer |
|---|---|
| What is Newton's First Law of Motion? | An object at rest remains at rest, and an object in motion stays in motion unless acted upon by an outside, unbalanceed force. |
| For Equal Forces, a _______ mass accelerates _______. | larger, greater |
| What is force measured in? | Newtons(N) |
| Inertia is... | Related to an objects mass. |
| What do all objects have? | Inertia |
| What does one Newton equal? | 1N= 1kg x 1m/s2 |
| For equal masses, ________ force produces a _______ acceleration. | greater, greater |
| What is Newton's 2nd Law of Motion? | Net Force is equal to mass x acceleration. The unbalanced force on an object determines how much an object speeds up or slows down. |
| Inertia is realted to what? | An object's mass |
| What is weight measuered in? | Newtons(N) |
| Why is weight different from mass? | Mass is the amount of matter in an objects, but weight is the gravitational force an object has. |
| What would happen in the absense of air resistence? | All objects falling near Earth's surface accelerate at the same rate, regardless of their mass. |
| Through the force of what do all objects attract eachother? | Gravity |
| Garvity increases as ______ increases. | Mass |
| What can air resistence balance? | Weight |
| Astronauts in orbit are in what? | Free Fall |
| All matter is affected by what? | Gravity |
| What does Newton's Law of Universal Gravitation give? | The size of the gravitational force bewtween two objects. |
| Gravitational force decreases as _______ increases. | Distance |
| What are the 2 components of Projectile Motion and what happens when they combine? | horizontal and vertical; They form a curved path. |
| What is Newton's Thrid Law of Motion also called and what is it? | The Law of Action and Reaction; For every action force, there is an equal and opposite reaction force. |
| What do forces always occur in? | Pairs |
| Momentum increases as what increases? | Mass and Velocity |
| Forces in a force pair do or do not act on the same object? | Not |
| When Object A wxerts a force on Object B, what happens? | Object B exerts a force equal in size and opposite in direction. |
| What are the SI units for momentum? | kg x m/s |
| What does the Law of Conservation of Momentum say? | The total momentum of two or more objects after a collision is the same as it was before the collision. |
| What is terminal velocity? | The constant velocity of a falling object when the force of air resistence is equal in magniitude and opposite in direction of force. |
Created by:
erinbelcher96
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