ASSESSMENT 1 (SEM 1) 2023

A car travels 100km. The journey takes two hours. The highest speed of the car is 80km/ h, and the lowest speed is 40 km/h.

What is the average speed for the journey?

• 40 km/h

• 50 km/h

• 60 km/h

• 120 km/h

The table shows the readings on a car speedometer at 5 second intervals.

Which answer describes the speed and the acceleration of the car?

• speed : decreasing acceleration : zero

• speed : decreasing acceleration : not zero

• speed : increasing acceleration : zero

• speed : increasing acceleration : not zero

A car travels along the route PQRST in 30 minutes.

What is the average speed of the car?

• 10 km/hour

• 20 km/hour

• 30 km/hour

• 60 km/hour

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

Which graph represents an object that is at rest?

• 
• 
• 
• 

A student determines the average speed of a bubble rising through a liquid at constant speed.

When the student starts the stopwatch the bubble is at position P.

After 2.0 s the bubble is at position Q.

What is the speed of the bubble between P and Q?

• 3.2 cm/s

• 3.7 cm/s

• 6.4 cm/s

• 7.4 cm/s

The speed-time graph represents a motorcycle journey.

In which part of the graph is the acceleration equal to zero?

• A

• B

• C

• D

The diagram shows the speed-time graph for a toy car travelling in a straight line.

What is the acceleration of the car during the first two seconds and what is the total distance that it travels?

A student investigates the rate of flow of oil through a funnel.

The diagrams show the experiment and the volume of oil in the measuring cylinder at the start of the experiment, and one minute later.

What is the rate of flow of oil through the funnel during the one minute?

A car takes 15 minutes to travel along a road that is 20 km long.

What is the average speed of the car?

• 0.75 km/h

• 5.0 km/h

• 80 km/h

• 300 km/h

The speed-time graph shows the motion of a car.

At which time is its acceleration greatest?

• A

• B

• C

• D