Speed, Velocity & Acceleration

Two distance/ time graphs and two speed/ time graphs are shown.

Which graph represents an object that is at rest?

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A car travels along the route PQRST in 30 minutes.

What is the average speed of the car?

• 10km/ hour

• 20km/ hour

• 30km/ hour

• 60km/ hour

The diagram shows the speed/ time graph for an object moving at constant speed.

What is the distance travelled by the object in the first 3s?

• 1.5 m

• 2.0 m

• 3.0 m

• 6.0 m

A tennis player hits a ball hard and 0.40s later hears the echo from a wall.

The speed of sound in air is 330m/ s.

How far away is the player from the wall?

• 66 m

• 132 m

• 264 m

• 825 m

An object moves initially with constant speed and then with constant acceleration.

Which graph shows this motion?

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The graph shows how the speed of a car changes with time.

Between which two times is the car stationary?

• U and V

• V and W

• W and X

• X and Y

A child is standing on the platform of a station.

A train travelling at 30m/ s takes 3.0s to pass the child.

What is the length of the train?

• 10 m

• 27 m

• 30m

• 90 m

In a race, a car travels 60 times around a 3.6km track. This takes 2.4 hours.

What is the average speed of the car?

• 1.5 km/h

• 90 km/h

• 144 km/h

• 216 km/h

A car travels at various speeds during a short journey.

The table shows the distances travelled and the times taken during each of four stages P, Q, R and S.

During which two stages is the car travelling at the same average speed?

• P and Q

• P and S

• Q and R

• R and S

The diagram shows the speed/ time graph for a train as it travels along a track.

For which part of the graph is the train’s speed changing at the greatest rate?

• PQ

• QR

• RS

• ST