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Physics - P2 > Topic 3 - Motion And Forces > Flashcards

Topic 3 - Motion And Forces Flashcards

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1
Q

What is speed?

A

How fast you’re going

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2
Q

What is velocity?

A

Speed and a direction

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3
Q

What is the formula for speed

A

Speed = distance/time

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4
Q

What is acceleration?

A

How quickly velocity is changing. It has a magnitude and direction.

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5
Q

What is the formula for acceleration

A

Acceleration = change in velocity/time taken

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6
Q

What is the unit of acceleration and why?

A

M/s^2 because it metres/(seconds x seconds)

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7
Q

What does the gradient represent in a distance time graph?

A

Speed

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8
Q

What does a flat section on a distance time graph represent?

A

It’s stopped

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9
Q

What does a downhill section represent on a distance time graph

A

It’s going back towards the starting point

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10
Q

What does a steepening curve represent on a distance time graph

A

It’s speeding up

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11
Q

What does a levelling off curve represent on s distance time graph ?

A

Slowing down

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12
Q

How do you work out the gradient on a graph?

A

Vertical height/ horizontal distance

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13
Q

What does gradient represent on a velocity time graph

A

Acceleration

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14
Q

What does a flat section represent on a velocity time graph

A

Steady speed

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15
Q

What does a steep gradient represent?

A

The steeper the gradient the greater the acceleration or deceleration

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16
Q

What does an uphill section on a velocity time graph represent?

A

Acceleration

17
Q

What does a downhill section of a velocity time graph represent

A

Deceleration

18
Q

How do you work out distance from a velocity time graph

A

The area underneath any section is equal to the distance travelled in that time interval

19
Q

What does a curve represent in a velocity time graph

A

Chang in acceleration

20
Q

What does the length of an arrow represent on a force diagram

A

Size of the force

21
Q

What does it mean if all arrow on a force diagram are the same size?

A

Either stationary or moving at a steady speed

22
Q

What does it mean if arrows on a force diagram are different sizes?

A

Acceleration or deceleration

23
Q

What are sped and velocity measured in?

A

M/s

Physics - P2 (6 decks)

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