Term
| Newton's First Law of Motion |
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Definition
| an object will remain at rest or move with constant speed unless a force is applied. |
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Term
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Definition
| push or pull on an object |
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Term
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Definition
| The combination of all the forces acting on an object |
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Term
When forces are balanced forces, they _________
each other out and ________ change an objects motion |
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Definition
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Term
| When forces are unbalanced forces the _______of an object changes. |
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Definition
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Term
| ___________is a force that resists sliding between two touching surfaces or through ______or _______ |
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Definition
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Term
| The type of friction that prevents an object from moving when a force is applied |
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Definition
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Term
| Friction does what to an object? |
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Definition
| slows down an object's motion |
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Term
| _____________ is due to the microscopic roughness of two surfaces |
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Definition
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Term
| Sliding friction ______ ______ a sliding object |
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Definition
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Term
| Rolling friction between the _______and _______ allows the wheel to roll |
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Definition
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Term
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Definition
Rubbing two sticks together to make fire
rubbing hands together to feel heat
Brakes on a car to make it stop |
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Term
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Definition
| Connects forces, acceleration and mass |
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Term
| Explains that an object acted upon by a force will accelerate in the direction of the force, acceleration equals net force divided by mass |
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Definition
| Newton's Second law of motion |
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Term
| Gravity attractive force between two objects; depends on the _________of the objects and the _______between them. |
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Definition
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Term
| Gravitational force is also called_______ |
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Definition
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Term
| The second law of motion explains how to calculate the acceleration of an object if what two things are known? |
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Definition
| the object's mass and the forces acting on it |
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Term
| In circular motion, the _________force is always __________to the motion |
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Definition
centripetal
perpendicular |
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Term
| The terminal velocity is reached when __________________________________ |
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Definition
| the force of gravity is balanced by the air resistance |
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Term
| The size of the air resistance force depends on _________________________________ |
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Definition
| The shape of an object and its speed |
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Term
| An object can speed up, slow down, or turn in the direction of the net force when _____________________ |
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Definition
| unbalanced forces act on it |
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Term
| states that forces always act in equal but opposite pairs; for every action there is an equal and opposite reaction |
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Definition
| Newton's Third Law of Motion |
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Term
| connects forces, acceleration, and mass; it explains that an object acted upon by a force will accelerate in the direction of the forces, acceleration equals net force divided by mass |
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Definition
| Newton's Second Law of Motion |
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Term
| Always the same size but are in opposite directions and act on different objects |
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Definition
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Term
| When the mass of one object is considerably larger than the mass of another object__________ is not noticeable |
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Definition
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Term
| Air and water exert action-reaction forces tiwh object such as; |
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Definition
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Term
| A rocket launches due to the _______________forces of the ________________ |
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Definition
equal but opposite
burning fuel |
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