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GCSE Physics > 1 - Forces & Motion > Flashcards

1 - Forces & Motion Flashcards

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1
Q

What is power?

A

The rate at which work is done per second

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2
Q

What is meant by “work done” ?

A
  • Energy transferred

- force causing an object to move

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3
Q

What is the gravitational field strength on earth?

A

10N/Kg

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4
Q

What is weight measured in?

A

Newtons

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5
Q

What is weight equal to?

A

Force

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6
Q

What is grams to kilograms?

A

Divide by 1000

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7
Q

What is cm to metres

A

Divide by 100

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8
Q

What does the area under a velocity time graph show?

A

Distance travelled

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9
Q

What are scalars?

A

Quantities that have only a magnitude

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10
Q

What is a vector?

A

Quantities with both magnitude and direction

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11
Q

What are examples of scalars?

A

Speed, distance, mass

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12
Q

What are examples of vectors?

A

Velocity, acceleration, weight

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13
Q

What is friction?

A

The force which opposes the motion of an object

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14
Q

Stopping distance =

A

Thinking distance + braking distance

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15
Q

What factors effect stopping distance?

A

Car speed, car mass, road conditions

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16
Q

What two forces do falling objects experience?

A

Weight and air resistance

17
Q

What does hooke’s law state?

A

The extension of an elastic object is directionally proportional to the force applied, up to the limit of proportionality

18
Q

When does elastic deformation occur ?

A

When objects return to their original shape when the stretching force is removed

19
Q

When does inelastic deformation occur?

A

When objects remain stretched when the stretching force is removed

20
Q

What is terminal velocity?

A

When there is no resultant force and the object reaches a steady speed.

21
Q

Describe the stages of terminal velocity

A
  • weight acts downwards
  • drag acts upwards
  • object accelerates + drag increases
  • eventually drag = weight
  • object travels at a constant speed

GCSE Physics (6 decks)

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