Term
| What causes an object to accelerate? |
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Definition
| When there are unbalanced forces acting on an object. |
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Term
| Acceleration depends on the __________ force. |
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Definition
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Term
| What does acceleration~net force mean? |
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Definition
| Acceleration is directly proportional to net force. |
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Term
| Mass in ________ proportional to net force. |
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Definition
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Term
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Definition
| The force between two materials that touch as they move past each other. |
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Term
| Friction is mainly due to _________. |
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Definition
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Term
| What are the factors that affect the amount of friction between two surfaces in contact? |
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Definition
| The kind of material and how much they are together. |
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Term
| What direction does friction act? |
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Definition
| Friction acts in the opposite direction of the motion. |
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Term
| When does static friction occur? |
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Definition
| Static friction occurs when you are just starting to move an object. |
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Term
| When does sliding friction occur? |
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Definition
| Sliding friction occurs when an object is in motion. |
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Term
| Which is the larger quantity, sliding or static? |
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Definition
| Static friction is a larger quantity. |
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Term
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Definition
| Fluid friction is friction that occurs in liquids. |
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Term
| When does fluid friction occur? |
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Definition
| As on object pushes aside the fluid on it. |
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Term
| What is a free-body diagram? |
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Definition
| A diagram showing all forces on an object. |
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Term
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Definition
| Pascals are a unit of measurement equal to newtons per square meter. |
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Term
| Newton explained why objects fell at the same rate. Why? |
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Definition
| The inertia of the heavier object has more inertia, so it falls slower than the lighter object. |
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Term
| When does terminal velocity occur? |
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Definition
| When the acceleration terminates and the forces are balanced. |
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