Starter quiz

  • Match the units to the quantity they measure.
    • distance
      ⇔
      metres ✓
    • time
      ⇔
      seconds ✓
    • mass
      ⇔
      kilograms ✓
    • speed
      ⇔
      metres per second ✓
  • How is average speed calculated?
    • \text{average speed} = \text{distance} \times \text{time}
    • \text{average speed} = \text{distance} + \text{time}
    • \text {average speed} = {\text{distance} \over \text{time}}  ✓
    • \text{average speed} = \text{distance} – \text{time}
    • \text{average speed} = \text{distance} \times \text{time}^2
  • Match the symbol to the quantity.
    • s
      ⇔
      distance (displacement) ✓
    • v
      ⇔
      speed (velocity) ✓
    • t
      ⇔
      time ✓
  • Why is the instantaneous speed of a trolley greater at the bottom of the ramp than near the top?
    • A resultant force is acting on the trolley, causing it to speed up.  ✓
    • Frictional forces are increasing the speed of the trolley.
    • The trolley is producing more energy as it moves faster.
    • The mass of the trolley is decreasing as it travels.
  • During an experiment, a trolley rolls down a ramp, getting faster as it moves. Which two statements are correct?
    • The instantaneous speed is constant.
    • The instantaneous speed is greatest at the bottom of the ramp.  ✓
    • The instantaneous speed is greatest at the top of the ramp.
    • The greatest instantaneous speed is higher than the average speed.  ✓
    • The greatest instantaneous speed is lower than the average speed.
  • Calculate the speed of a trolley if it travels a distance of 10 cm in 0.2 s. Give your answer in m/s.
    • '0.5 m/s' ✓
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