Unit 2: Chapter 1 - Motion

Question 1

Distance-time Graphs

What does the gradient of distance-time graph represent?

Answer 1

THE GRADIENT ON A DISTANCE-TIME GRAPH REPRESENTS SPEED.

/ = Constant speed

_ = Stationary

Speed (m/s) = Distance (m) / Time (s)

Question 2

Velocity and Acceleration

Answer 2

VELOCITY IS SPEED IN A GIVEN DIRECTION.

If the speed is constant but the direction is constantly changing, this means the velocity is not constant.

ACCELERATION

ACCELERATION OF AN OBJECT IS CHANGE IN VELOCITY/ SECOND.

CHANGE IN VELOCITY/ TIME = ACCELERATION.

Question 3

Velocity-Time Graphs

Answer 3

THE GRADIENT ON A VELOCITY-TIME GRAPH REPRESENTS ACCELERATION.

/ = Accelerating

_ = Constant speed

\ = Slowing down / braking

The area under the line on a velocity-time graph represents distance travelled.