2 Motion 2021 JnN

The diagrams show distance–time graphs for four objects.

Which graph represents an object moving with an increasing speed?

Which graph represents an object that is moving at constant speed?

The graph shows how the speed of a car varies with time at the start of a journey.

Which distance–time graph represents the motion of the car over the same time period?

The distance–time graph for a motorway journey is shown.

What is the average speed for the journey?

• 50 km/h

• 67 km/h

• 70 km/h

• 83 km/h

A cyclist rides 300 m up a slope in 50 s.

She then rides down the slope in 25 s.

What is her average speed for the whole journey?

• 4.0 m/s

• 8.0 m/s

• 9.0 m/s

• 16 m/s

A cyclist records his speed and the distance travelled during a journey.

He then plots the data against time for different sections of his journey.

Which graph shows a section when he is moving with constant speed?

Which row describes speed and velocity?

Four balls with different masses are dropped from the heights shown. Air resistance may be ignored.

Which ball has the smallest average speed?

A ball is thrown vertically upwards through the air.

Air resistance acts on the ball.

Which graph shows how its speed varies with time?

Two rockets are launched at the same time from the surface of the Earth.

The graph shows how the speeds of the rockets change with time.

Which statement about the rockets is correct?

• Both rockets travel the same distance.

• Rocket P accelerates and then decelerates.

• Rocket P travels further than rocket Q.

• Rocket Q has zero acceleration.