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Physics > Momentum > Flashcards

Momentum Flashcards

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1
Q

What is momentum!?

A

A quantity relating to a moving object that is calculated by multiplying its mass by its velocity.

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2
Q

What is momentum a product of!?

A

Mass and velocity

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3
Q

What is mass!?

A

The amount of matter an object contains. Mass is measured in kilograms (kg) or grams (g).

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4
Q

Is momentum a scalar or a vector!?

A

It is a vector quantity

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5
Q

What is the calculation for momentum!?

A

Momentum= mass x velocity

P=mv

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6
Q

What is momentum measured in!?

A

Kgm/s

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7
Q

What is a closed system!?

A

If the object cannot be affected or affect anything outside of it.

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8
Q

What is it called when 2 objects collide in a closed system!?

A

Conservation of momentum

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9
Q

What is the equation for conservation of momentum!?

A

Total momentum before an event = total momentum after an event

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10
Q

What is conservation of momentum!?

A

The principle that the total momentum of a system remains the same. When bodies collide, whatever momentum is lost by one body, the other gains in equal amounts.

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11
Q

What is a change in momentum!?

A

When a resultant force acts on an object that is moving, or able to move, there is a change in momentum.

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12
Q

How do you calculate the rate of change of momentum!?

A

Force= mass x change in velocity/time take = change in momentum/time taken

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13
Q

What does the calculation for change in momentum show!?

A

It shows that the force involved is equal to the rate of change of momentum

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14
Q

What is rate of change!?

A

The amount of change in the size of a quantity each second.

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15
Q

Name the car safety features…..

A

seatbelts, airbags and crumple zones

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16
Q

What do all the car safety Features do!?

A

all work to change the shape of the car, which increases the time taken for the collision.

17
Q

What are crumple zones!?

A

Crumple zones refer to the areas of a car that are designed to deform or crumple on impact.

18
Q

What do these car safety features do in terms of momentum!?

A

These different safety features decrease the rate of change of momentum, which decreases the force of the collision on any people within the car.

Physics (12 decks)

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