10 minutes maximum! Can you do it in 5?

1. Which of these is the correct formula for speed?

  • A. speed = distance x time
  • B. speed = distance x acceleration
  • C. speed = distance ÷ time
  • D. speed = distance ÷ acceleration

2. A tortoise is pretty slow, only covering 100 cm in 50 seconds. It therefore has a speed of:

  • A. 2 m/s
  • B. 2 cm/s
  • C. 0.5 m/s
  • D. 0.5 cm/s

3+4. A cheetah can run at a top speed of 30 m/s.

cheetah
3. How far could it run in 5 seconds?
  • A. 0.16 m
  • B. 6 m
  • C. 150 m
  • D. 15 m

4. How long would it take the cheetah to cover 600 m?

  • A. 20 s
  • B. 0.05 s
  • C. 200 s
  • D. 18000 s

5. Which of these is the correct formula for acceleration?

  • A. acceleration = velocity x time
  • B. acceleration = change in velocity x time
  • C. acceleration = velocity ÷ time
  • D. acceleration = change in velocity ÷ time

6. What are the correct units for acceleration?

  • A. "meters per second"
  • B. "meters seconds"
  • C. "meters seconds squared"
  • D. "meters per second squared"
7-9. What are the missing numbers in this table showing the acceleration of different motor boats? motor boat
  acceleration (m/s2)

starting velocity (m/s)

final velocity (m/s)

Time (s)
7. 0 20 5
8. 3 0 30
9. 4 5 10

10. A toy car accelerates across the floor at 2 m/s2. After 3 seconds the velocity is 10 m/s. What was the starting velocity?

  • A. 60 m/s
  • B. 10 m/s
  • C. 6 m/s
  • D. 4 m/s