Motion in Physics

The slope on a distance-time graph represents speed.

• Distance is measured in metres
• Time is measured in seconds
• Speed is measured in metres per second

Speed = distance travelled / time taken

The slope on the line of a velocity-time graph represents accereration.

• Braking reduces the velocity of a vehicle

When the line's slop is zero, the acceleration is zero.

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

Distance-Time Graphs:

• For an object moving at constant speed, the distance-time graph is a straight line.
• To find the slope, draw a triangle under the line .
• The height of the triangle represents the distance travelled
• The base of the triangle represents the time taken

Slope of the line = height of triangle/ base of triangle