Calculating from motion graphs (a=(v–u)/t and v=x/t) | Physics

Starter quiz

Match the quantity to the unit it is measured in.
- mass
  
  ⇔
  
  kilogram (kg) ✓
- velocity
  
  ⇔
  
  metres per second (m/s) ✓
- displacement
  
  ⇔
  
  metres (m) ✓
- time
  
  ⇔
  
  seconds (s) ✓
- acceleration
  
  ⇔
  
  metres per second squared (m/s $^2$ ) ✓
What is the velocity of this object at time = 3 s?
- 1 m/s
- 3 m/s
- 5 m/s
- 6 m/s ✓
- 9 m/s
Which of these is a correct definition of acceleration?
- The rate of change of velocity. ✓
- The rate of change of displacement.
- The rate of change of speed.
- The overall change in velocity.
- The overall change in position.
During which time period is this object decelerating?
- Between 0 s and 2 s.
- Between 2 s and 4 s.
- Between 4 s and 7 s.
- Between 5 s and 7 s. ✓
- Between 7 s and 8 s.
A speedboat increases its velocity from 2.0 m/s to 14 m/s in a time of 8.0 s. Calculate the acceleration of the speedboat.
- 0.25 m/s $^2$
- 0.67 m/s $^2$
- 1.5 m/s $^2$ ✓
- 1.75 m/s $^2$
- 12 m/s $^2$
The displacement-time graph shows the movement of a robot. Calculate the velocity of the robot at time = 45 s.
- '-0.1 m/s' ✓