Term
| What is momentum associated with? |
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Definition
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Term
| What is the equation for momentum when direction is important? |
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Definition
| Momentum=(mass)(velocity) |
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Term
| What is the equation for momentum when direction is not important? |
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Definition
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Term
| What would cause a large momentum? |
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Definition
1) Large mass
2) Large velocity
3) Both |
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Term
| Even if an object has an enormous mass, if the velocity is zero, the momentum is ______________________. |
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Definition
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Term
| If you have a higher momentum, you would have a harder time ________________________________. |
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Definition
| Changing direction/stopping it |
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Term
| What is Inertia and its important factors in comparison with momentum? |
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Definition
| works for moving objects, and resting ones, and only depends on mass. |
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Term
| What is momentum's important factors in comparison with inertia? |
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Definition
| Works only on moving objects, and requires both mass and velocity |
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Term
| Momentum changes when ___________, ____________, or _____________ changes |
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Definition
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Term
| To change momentum, an ____________________ is required. |
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Definition
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Term
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Definition
| considers amount of force exerted and how long it is exerted for. Changes momentum. |
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Term
| What is the equation for impulse? |
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Definition
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Term
| To change an object's momentum as much as possible, apply _________________________. |
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Definition
| A large force for a large time |
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Term
| An impulse must be exerted by something _________________ to the object. |
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Definition
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Term
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Definition
a) The gun pushes on the bullet
b) The bullet pushes on the gun with equal and opposite forces
c) Therefore, the forces produce equal and opposite impulses
- Equal and opposite changes in momentum |
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Term
| Momentum is a __________________. |
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Definition
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Term
| Momentum is always ___________________. |
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Definition
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Term
| Momentum is _________________________. |
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Definition
| Always conserved in a collision. |
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Term
| What is the equation for change in momentum? |
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Definition
| [NET (MASS)(VELOCITY)]before=[NET (MASS)(VELOCITY)]after |
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Term
| What is an elastic collision? |
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Definition
| No deformation or heat generation occurs |
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Term
| What is an inelastic collision? |
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Definition
| deformation and/or heat generation occurs |
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Term
| If you run into a brick wall and a haystack, at a constant momentum both times which will hurt more and why? |
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Definition
| The brick wall because the time for the haystack would be longer because you would slowly sink in, there for the force would be smaller. The time for the brick wall would clearly have an abrupt stop, so the force of the brick wall would be very high. |
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