Displacement, Velocity & Acceleration

Which of the following is a scalar quantity?

• Displacement

• Velocity

• Acceleration

• Distance

What is the definition of velocity?

• The total distance travelled per unit of time

• The rate of change of displacement of an object

• The rate of change of velocity of an object

• The distance of an object from a fixed point in a specified direction

What is the equation for acceleration?

• Displacement = Velocity / Time

• Velocity = Displacement / Time

• Acceleration = Velocity / Time

• Acceleration = Change in Velocity / Time

How is instantaneous velocity calculated on a displacement-time graph?

• By drawing a tangent at the required time and calculating its gradient

• By finding the total displacement divided by the total time

• By drawing a tangent on the displacement-time graph

• By calculating the rate of change of displacement

What is the average speed equation?

• Average speed = total distance / total time

• Average speed = total time / total distance

• Average speed = total displacement / total time

• Average speed = total time / total displacement

A car accelerates uniformly from rest to a speed of 150 km/h in 6.2 s. Calculate the magnitude of the acceleration of the car in m/s².

• 0.24

• 2.42

• 24.2

• 242

An object accelerating is shown by a ________ line on a displacement-time graph.

• Straight

• Curved

• Horizontal

• Vertical

What is the average speed of a cyclist who travels a distance of 20 m at a constant speed and then decelerates to a traffic light 5 m ahead? The whole journey takes 3.5 s.

• 2.9 m/s

• 5.7 m/s

• 7.1 m/s

• 10.0 m/s

Which of the following is a vector quantity?

• Distance

• Speed

• Displacement

• Total distance