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Terms in this set (11) Which has a greater momentum, a heavy truck at rest or a moving skateboard? A moving skateboard has a greater momentum than a heavy truck at rest.

So yes, a tiny thing like a bullet can have the momentum of almost anything in size up to a modern cargo ship. The huge ship moves at less than 50 mph, the bullet would have to be propelled at millions of times that velocity to have the same momentum as the ship.

An inelastic collisions occurs when two objects collide and do not bounce away from each other. Momentum is conserved, because the total momentum of both objects before and after the collision is the same. However, kinetic energy is not conserved.

How can a supertanker have a huge momentum when it moves relatively slowly? It has a huge momentum because its mass is huge. A cannonball will have more momentum coming from the long cannon due to the force acting, for more time.

Physics the fourth

A | B |
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What is the momentum of an eight kg bowling ball rolling at 2 m/s? | 8 kg x 2 m/s=16 kg x m/s |

If the bowling ball rolls into a pillow and stops in.5 s, calculate the average force exerted on the pillow. | F=deltamv/t=16kg x m/s/0.5 s=32 N |

What average force does the pillow exert on the bowling ball. | same |

How does Dr. Hewitt break the piece of wood? He causes a change in momentum of his hand over a short period of time. Increase the change in momentum, and decrease the time duration.

In a collision, the momentum change of object 1 is equal to and opposite of the momentum change of object 2. That is, the momentum lost by object 1 is equal to the momentum gained by object 2.

A tiny bullet can have more momentum than a huge truck. If it moves twice as fast, its momentum is TWICE as much. 12. Two cars, one twice as heavy as the other, move down a hill at the same speed.

Section 1 Impulse and Momentum: Mastering Concepts SOLUTION: Yes, for a bullet to have the same momentum as a truck, it must have a higher velocity because the two masses are not the same.

Inelastic Collision Collisions between objects are governed by laws of momentum and energy. When a collision occurs in an isolated system, the total momentum of the system of objects is conserved. In the collision between the truck and the car, total system momentum is conserved.

Collisions. In collisions between two isolated objects Newton’s third law implies that momentum is always conserved. In collisions between two isolated objects momentum is always conserved. Kinetic energy is only conserved in elastic collisions.

The conservation of momentum is simply a statement of Newton’s third law of motion. During a collision the forces on the colliding bodies are always equal and opposite at each instant. These forces cannot be anything but equal and opposite at each instant during collision. Therefore the momentum is always conserved.

There is a peculiarity, however, in that momentum is a vector, involving both the direction and the magnitude of motion, so that the momenta of objects going in opposite directions can cancel to yield an overall sum of zero.

Why is it less damaging if you fall on a mat than if you fall on a solid floor? The time to come to a stop will be longer on the mat. This means a longer time to stop and a smaller force. This stretches the time, which results in less force.

Science review sheet

Question | Answer |
---|---|

What is the momentum of a 20 kg dog running at a speed of 8 m / s? | 160 kg / s |

Momentum | The quanity of motion of a moving body, measured as a product of its mass and velocity |

Explain the law of conservation of momentum | The total momentum of objects that interact do not change |

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