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1.5 Forces

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Question 81

An airplane is flying at a constant speed in a straight line at a constant altitude. Which of the following statements about the airplane is correct?

A

The upward lift force is greater than the weight of the airplane.

B

The forward thrust is greater than the opposing drag force.

C

The resultant force on the airplane is zero.

D

The resultant force on the airplane is in the direction of motion.

Markscheme

1.5 Forces Questions

  1. IGCSE
  2. /Physics
  3. /1.5 Forces

245 exam-style questions on CIE IGCSE Physics 1.5 Forces, covering 1.5.1a Forces, resultant force and motion, 1.5.1b Load–extension graphs and the spring constant, 1.5.1c Friction and drag, 1.5.1d Force, mass and acceleration, 1.5.1e Motion in a circular path, 1.5.2a Moment of a force, 1.5.2b Principle of moments and equilibrium, and 1.5.3 Centre of gravity and stability. Each one has a worked solution and a mark scheme showing where the marks go.

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