P2 Motion graphs Flashcards Preview

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Flashcards in P2 Motion graphs Deck (11)
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1
Q

How can we tell from a distance-time graph if an object is stationary?

A

The line is horizontal

2
Q

How can we tell, by looking at distance time graph, if an object is moving at a constant speed ?

A

The line is straight and slopes upwards.

3
Q

What does the gradient of a distance-time graph tell us?

A

This represents the object’s speed.

4
Q

How do we calculate the speed of an object?

A

Speed in m/sec = distance travelled (m) /time taken (s)

5
Q

What is the difference between speed and velocity?

A

Velocity is speed in a given direction.

6
Q

What is acceleration and what is its unit of measurement?

A

Acceleration is change of velocity per second. m/s squared.

7
Q

How do we calculate the acceleration of an object?

A

Acceleration = change of velocity / time taken

8
Q

What is deceleration?

A

Or negative acceleration. When an object slows down.

9
Q

What can we say if a velocity-time graph is a horizontal line?

A

The acceleration is zero

10
Q

How can we tell from a velocity-time graph if an object is accelerating or decelerating?

A

From the gradient of the line.

11
Q

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

A

Distance travelled.