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Physics > Kinetic Energy > Flashcards

Kinetic Energy Flashcards

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1
Q

Kinetic energy is energy of…

A

Movement.

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2
Q

Anything that is moving has…

A

Kinetic energy.

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3
Q

What is the formula for kinetic energy?

A

1/2 x mass x speed2 = kinetic energy.

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4
Q

Kinetic energy depends on both…

A

Mass.

Speed.

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5
Q

The more it weighs and the faster it’s going…

A

The more kinetic energy it has.

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6
Q

Small mass, not fast…

A

Low kinetic energy.

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7
Q

Kinetic energy transferred is what?

A

Work done.

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8
Q

To slow a car down what needs to happen?

A

The kinetic energy needs to be converted into other types of energy.

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9
Q

What does the conservation of energy state?

A

That energy can never be destroyed or created.

Only converted into different forms.

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10
Q

To stop a car, what does the kinetic energy covert into?

A

Heat energy as friction between the wheels and the brake pads cause temperature of the brakes to increase.

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11
Q

M stands for?

A

Mass of car and passengers.

kg.

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12
Q

V stands for?

A

Speed of car.

m/s.

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13
Q

F stands for?

A

Maximum breaking force.

N.

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14
Q

D stands for?

A

Braking distance.

m.

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15
Q

Falling objects covert ______ _____ into ______ _____

A

Potential energy - Ep.

Kinetic energy - Ek.

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16
Q

Further it falls…

A

Faster it goes.

17
Q

Kinetic energy gained=

A

Potential energy lost.

18
Q

Some kinetic energy is converted into…

A

Heat.

Sound.

19
Q

When meteors and space shuttles enter the atmosphere they have what?

A

Very high kinetic energy.

20
Q

Friction due to collisions with….

A

Particles.

21
Q

Friction due to collisions with particles in the atmosphere transfers…

A

Some kinetic energy to heat energy and work is done.

22
Q

Why do meteors not hit the earth?

A

As they temperatures get so extreme they burn up.

23
Q

What are the biggest meteors called?

A

Meteorites.

24
Q

Space shuttles have heat shields made from what?

A

Special materials which lose heat quickly.

Allowing shuttle to re-enter the atmosphere without burning up.

Physics (31 decks)

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