Comparing the speeds of different parachutes

12 questions

1. Which force causes objects to fall to the ground?
2. Why is a force represented by an arrow on a diagram? Choose the best answer.
3. Which force opposes movement through liquids?
4. At the end of a race a car opens a parachute. Why do they do this?
5. A car moving along a flat road has an unbalanced forwards force acting on it for 30 s. What will happen to the car's movement?
6. An emergency food parcel is dropped from a plane. Near the ground the parachute opens. What happens to the movement of the food parcel?
7. Match the key words to their explanations.
8. When does a falling object reach a steady top speed?
9. During a test. a pupil drops paper parachutes with different surface areas but equal weights. Which is the correct prediction about the fall speed?
10. In a parachute drop test the times recorded are 1.21 s, 1.24 s, 1.23 s and 1.28 s. What is the mean time?
11. A skydiver is falling with their parachute closed. What happens to the size of the forces on them immediately after opening the parachute?
12. A parachute is tested five times, falling through 1.5 m. The times are: 0.80 s, 0.70 s, 0.72 s, 0.77 s and 0.76 s. Calculate the average fall speed.

License: OGL