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1.5.1a Forces, resultant force and motion

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Question 66

A rocket is travelling vertically upwards. Three vertical forces act on it:

  • The thrust acts upwards and is equal to 150 000 N150\,000\text{ N}150000 N.
  • The weight acts downwards and is equal to 110 000 N110\,000\text{ N}110000 N.

What is the air resistance force acting on the rocket when it is travelling upwards at constant speed?

A

40 000 N40\,000\text{ N}40000 N downwards

B

40 000 N40\,000\text{ N}40000 N upwards

C

260 000 N260\,000\text{ N}260000 N downwards

D

260 000 N260\,000\text{ N}260000 N upwards

Markscheme

1.5.1a Forces, resultant force and motion Questions

  1. IGCSE
  2. /Physics
  3. /1.5.1a Forces, resultant force and motion

183 exam-style questions on CIE IGCSE Physics 1.5.1a Forces, resultant force and motion. Each one has a worked solution and a mark scheme showing where the marks go.

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