# P2.1 - Motion Flashcards

0
Q

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

A

If the gradient remains the same the object is moving at a constant speed.

1
Q

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

A

Stationery is a horizontal line.

2
Q

How can we calculate the speed of an object?

A

Distance travelled in metres divided by the time taken in seconds i.e. Metres per second.

3
Q

What is the difference between speed and velocity?

A

Velocity is speed in a given direction i.e. a vector

4
Q

What is acceleration and its unit?

A

Acceleration is change of velocity per second. Measured in metres per second squared.

5
Q

How can we calculate the acceleration of an object?

A

Acceleration = change in velocity / time taken

6
Q

What is deceleration?

A

The change of velocity per second when an object slows down.

7
Q

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

A

The acceleration is zero.

8
Q

How can we tell from the velocity time graph if an object is accelerating all decelerating?

A

The gradient of the line represents acceleration.

9
Q

What does the area under velocity time graph represent?

A

The distance travelled.

10
Q

How can we calculate speed from a distance time graph?

A

The speed of an object is given by the gradient of the line on its distance time graph.