Calculating from velocity-time graphs (a = Δv/t) | Combined science

Starter quiz

Five yachts have a sailing race around the same course. Their completion times are shown. Starting with the fastest, put them in order of average speed.
- 1
  
  ⇔
  
  1 hour 15 minutes
- 2
  
  ⇔
  
  1 hour 19 minutes
- 3
  
  ⇔
  
  1 hour 20 minutes
- 4
  
  ⇔
  
  1 hour 28 minutes
- 5
  
  ⇔
  
  1 hours 49 minutes
An electric scooter has a maximum speed of 2.5 m/s. Calculate the maximum distance it can travel in 50 s.
- 2.5 m
- 20 m
- 47.5 m
- 52.5 m
- 125 m ✓
Which word is used to describe an object which has a decreasing velocity?
- 'decelerating' ✓
Which of these is the correct unit for acceleration?
- m
- m/s
- ms
- m/s $^2$ ✓
- m/s $^3$
A satellite travels a distance of 10 800 km in 1 hour. What is the speed of the satellite in km/s?
- 10 800 km/s
- 180 km/s
- 3.0 km/s ✓
- 0.33 km/s
- 3.0 m/s
A train speeds up from 2 m/s to 8 m/s in a time of 50 s. Calculate the acceleration of the train.
- 0.12 m/s $^2$ ✓
- 0.16 m/s $^2$
- 0.04 m/s $^2$
- 8.3 m/s $^2$
- 6.0 m/s $^2$