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Physics Unit 2 > Chapter 1 > Flashcards

Chapter 1 Flashcards

0
Q

What is the formula for gradient?

A

^x

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1
Q

What does the gradient of a distance-time graph represent?

A

Speed

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2
Q

What do curves represent on a distance-time graph?

A

Acceleration-steepening curve

Deceleration-rounding off curve

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3
Q

What does a straight line on a distance-time graph represent?

A

Stopped

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4
Q

Define acceleration.

A

How quickly the velocity is changing speed or direction.

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5
Q

What are the units for acceleration?

A

m/s*2

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6
Q

What does the gradient of a velocity-time graph represent?

A

Acceleration

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7
Q

What do curves represent on a velocity-time graph?

A

Change in acceleration

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8
Q

What does a straight line represent on a velocity-time graph?

A

Constant Speed

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9
Q

What does the area under the graph represent on a velocity-time graph?

A

Distance

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10
Q

What is gravitational force?

A

The force of attraction between masses

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11
Q

What is weight?

A

The force of gravity pulling an object towards the centre of the Earth

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12
Q

All things travel towards the Earth with the same acceleration. True or False?

A

True

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13
Q

What is weight measured in?

A

Newtons

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14
Q

What is mass measured in?

A

Kilograms

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15
Q

What is the acceleration due to gravity on Earth?

A

10N/Kg

16
Q

Define the term resultant force.

A

The overall force on an object

17
Q

What makes an object move?

A

A force

18
Q

What are the five forms of acceleration?

A
  • Starting
  • Stopping
  • Speeding up
  • Slowing down
  • Changing direction
19
Q

When two objects interact, what do the forces need to be?

A

Equal

20
Q

Things move due to the same masses. True or False?

A

False-it’s due to different masses

21
Q

What does friction do to a moving object?

A

Slow it down or stop it.

22
Q

What increases the amount of drag?

A

Increase in speed

23
Q

What is terminal velocity?

A

The maximum speed an object travels once the forces are balanced.

24
Q

What is frictional force dependant on?

A

Area and shape

25
Q

What is the formula for stopping distance?

A

Thinking distance + Breaking distance = Stopping Distance

26
Q

Define Thinking distance

A

The distance travelled during reaction time

27
Q

Define Breaking distance

A

Distance travelled under breaking force

Physics Unit 2 (2 decks)

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