Tahsili SAAT (Saudi Arabia) · Physics

Mechanics

22 practice questions, each with the answer and an explanation.

Practise Mechanics now

Random questions from this topic, one at a time. You see the answer and the explanation straight after each one.

All 22 questions

  1. A train moving at 15 m/s brakes with a constant deceleration of 5 m/s squared. What distance does it travel before stopping?
  2. A train moving at 15 m/s brakes with a constant deceleration of 8 m/s squared. What distance does it travel before stopping?
  3. A train moving at 25 m/s brakes with a constant deceleration of 4 m/s squared. What distance does it travel before stopping?
  4. A train moving at 30 m/s brakes with a constant deceleration of 6 m/s squared. What distance does it travel before stopping?
  5. A 6 kg crate is pulled along a rough floor by a force of 91 N. Friction is 23 N. What is the acceleration?
  6. A 6 kg crate is pulled along a rough floor by a force of 50 N. Friction is 9 N. What is the acceleration?
  7. A 12 kg crate is pulled along a rough floor by a force of 69 N. Friction is 20 N. What is the acceleration?
  8. What is the kinetic energy of a 9 kg object moving at 3 m/s?
  9. What is the kinetic energy of a 10 kg object moving at 10 m/s?
  10. What is the kinetic energy of a 2 kg object moving at 15 m/s?
  11. What is the kinetic energy of a 14 kg object moving at 14 m/s?
  12. An object slides without friction down a slope from rest through a vertical height of 5 m (g = 10 m/s squared). What is its speed at the bottom?
  13. An object slides without friction down a slope from rest through a vertical height of 45 m (g = 10 m/s squared). What is its speed at the bottom?
  14. A 8 kg trolley moving at 7 m/s hits a stationary 1 kg trolley and they stick together. What is their speed afterwards?
  15. A 6 kg trolley moving at 8 m/s hits a stationary 1 kg trolley and they stick together. What is their speed afterwards?
  16. A 6 kg trolley moving at 3 m/s hits a stationary 2 kg trolley and they stick together. What is their speed afterwards?
  17. A 6 kg trolley moving at 11 m/s hits a stationary 2 kg trolley and they stick together. What is their speed afterwards?
  18. A 4 kg trolley moving at 5 m/s hits a stationary 5 kg trolley and they stick together. What is their speed afterwards?
  19. A force of 630 N acts on an area of 2 square m. What pressure does it exert?
  20. A force of 270 N acts on an area of 5 square m. What pressure does it exert?
  21. A force of 180 N acts on an area of 20 square m. What pressure does it exert?
  22. A force of 192 N acts on an area of 4 square m. What pressure does it exert?

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