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1.5 Forces

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Question 19

Which statement about forces and motion is correct?

A

If an object is at rest, there cannot be any forces acting on it.

B

If the speed of an object is changing, the resultant force on it must be zero.

C

If an object is moving at a constant velocity, the resultant force acting on it must be zero.

D

If a constant nonzero resultant force acts on an object, it must move at a constant speed.

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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