Velocity-Time Graph

Question 1

What does the y-axis represent on a velocity-time graph?

Answer 1

Velocity (can be positive or negative).

Question 2

What does the x-axis represent on a velocity-time graph?

Answer 2

Time.

Question 3

What does a horizontal line on a velocity-time graph mean?

Answer 3

Constant velocity (same speed and direction).

Question 4

What does the slope (gradient) of a velocity-time graph tell us?

Answer 4

Acceleration.

Question 5

What does a line above the time axis indicate on a velocity-time graph?

Answer 5

The object is moving in the positive direction.

Question 6

What does a line below the time axis indicate on a velocity-time graph?

Answer 6

The object is moving in the opposite (negative) direction.

Question 7

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

Answer 7

Displacement (can be positive or negative).

Question 8

What does a velocity-time graph crossing the time axis represent?

Answer 8

The object changes direction.

Question 9

What does a sloping line on a velocity-time graph represent?

Answer 9

The object is accelerating or decelerating.

Question 10

How do you calculate acceleration from a velocity-time graph?

Answer 10

Acceleration = gradient (change in velocity ÷ change in time).

Question 11

A velocity-time graph shows a horizontal line at +5 m/s for 10 seconds. What is the acceleration?

Answer 11

The acceleration is 0 m/s² because the velocity is constant.