Term
| which of the following has the largest momentum relative to the earths surface? |
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Definition
| a pick up truck speeding along a highway |
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| a freight train rolls along a track with a considerable momentum. if it rolls at the same speed but has twice as much mass, its momentum is... |
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| is it correct to tsay that impulse is egual to... |
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Definition
| the change in momentum it produces |
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| the conversation of momentum is closely related to.... |
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| a rifle recoils while firing a bullet. the speed of the rifle's recoil is small because the..... |
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Definition
| rifle has much more mass than the bullet |
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Term
| suppose that a tiny gun made of a strong but very light material fires a bullet tha tis more massive that the gun itself. for such a weapon.... |
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Definition
| the target would be safer than a shooter. |
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Term
| two object have the same size and shape, but one is uch heavier than the other. when they are dropped simultaneously froma tower, they reach the ground at the same time, but the heavier one has greater.... |
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| a large heavy truck and a small baby carriage roll down a hill. neglecting friction, at the bottom of the hill, the baby carriage will have greater.... |
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| to catch a ball, a baseball player extends the hand forward before impact with the ball and then lets it ride backward in the direction of the ball;s motion. doing this reduces the force of the impat on the players hand principally because the..... |
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Definition
| time of impact is increased |
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Term
| when you jump from an elevated position you usually bend your knees upon reaching the ground. by doing this, you make the time of the impact about 10 times as great as for a stiff legged landing. in this way, the average force your body experiences is.... |
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| when you are in the way of a fast moving object, and cant get out of its way, you will suffer a smaller force of impact if you decrease it momentum over a.... |
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Definition
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Term
| a bullet is fired from a gun. the speed of the bullet will be about the same as the speed of the recoiling gun |
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Definition
| if the mass of the bullet equals the mass of the gun |
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Term
| padded dashboards in cars are saffer in an accident than nonpadded ones because an occupant hitting th edash has... |
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Definition
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Term
| the forece on a apple hitting th eground depends upon... |
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Definition
| the speed, the time, whether or not the apple bounces. |
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| comapred to falling on a stone floor, a wine glass may not break when it falls on a carpeted floor becaue the.... |
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Definition
| stopping time is lomger on the carpet |
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Term
| two billiard balls having the same mass and speed roll toward each other, what is their combined momentum after they meet? |
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| the force that accelerates a rocket in outer space is exerted on the rocket by the... |
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| a peice of putty moving with 1 unit of momentum strikes andsticks to a heavy bowling ball that is initally at rest. after the putty sticks to the ball, both move with a combined momentum of... |
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Term
| a karate expert executes a swift blow and breaks a cemtn block with their bear hand. the magnitude of the force experienced by the hand is... |
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Definition
| identical to the force applied to the block. |
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Term
| a heavy truck and a small car rolling down a hill at the same speed are forced to stop in the same amount of time. compared to the force that stops the car, the force needed to stop the truck is.. |
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Term
| recoil is noticable if we throw a heavy ball while standing on rollar skates. if instead we go through the motions of throwing the ball but hold onto it, our net recoil will be... |
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| a ball moving at 3m/s and has a momentum of 48 kg m/s. what is the balls mass? |
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| a 4 kg ball has a momentum if 12 kg m/s. what is the balls speed? |
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| the change in momentum, in kg m/s that occurs when a 1.0 kh nball travelling at 4.0 m/s strikes a wall and bounces back at 2.0 m/s is... |
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| a large metal ball is shot froma cannon with a short barrel. if the same ball were to be shot from a cannon with a longer barrel, its muzzle velocity would be... |
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