Changing the speed of a parachute | Science | Quizalize & Oak National Academy

Starter quiz

Which two pieces of apparatus could be used to take the measurements needed to find the speed of a falling model parachute?
- tape measure ✓
- newton meter
- digital balance
- stopwatch ✓
Which of these forces act on a skydiver as they fall downwards?
- drag ✓
- tension
- gravity ✓
- thrust
- magnetism
When does a falling object reach a steady speed?
- When there is no drag.
- When there is no gravity force.
- When the drag force is larger than the force of gravity.
- When there is no resultant force. ✓
- When the force of gravity is larger than the drag force.
A student measures how long a parachute takes to fall a distance of 2.0 m five separate times. Their readings are 1.5 s , 1.2 s, 1.4 s, 1.3 s and 1.4 s. Calculate the average fall time.
- 1.2 s
- 1.4 s ✓
- 5.8 s
- 70 s
- 350 s
A set of model parachutes with different surface areas were dropped through a distance of 1.5 m. Starting with the fastest, sort the parachutes in order of average fall speed.
- 1
  
  ⇔
  
  0.70 s
- 2
  
  ⇔
  
  0.72 s
- 3
  
  ⇔
  
  0.95 s
- 4
  
  ⇔
  
  0.99 s
- 5
  
  ⇔
  
  1.44 s
- 6
  
  ⇔
  
  1.48 s
A model parachute falls through a distance of 1.8 m in a time of 2.4 s. Calculate the average speed of the parachute during the fall. Give the correct unit.
- '0.75 m/s' ✓