passwella.
Menu

JAMB Physics 2004 Question 16

Question 16

Friction

A 100kg box is pushed along a road with a force of 500N. If the box moves with a uniform velocity, the coefficient of friction between the box and the road is

  1. A.0.5.
  2. B.0.4.
  3. C.1.0.
  4. D.0.8.
Show the answer and explanation

Answer: A (0.5.)

Explanation

Uniform velocity means friction equals the push: μ = 500 ÷ (100 × 10) = 0.5.