Resource Description

Two identical positively charged spheres, which are free to move, are placed near each other on a frictionless surface. Which ONE of the following CORRECTLY describes the motion of the two spheres? They move away from each other with:

A     Increasing acceleration

B     Decreasing acceleration

C     Constant acceleration

D     Zero acceleration (2)

QUESTION 3 (Start on a new page.) An object with a mass of 3 kg is allowed to hang over a frictionless pulley with a light inextensible string that is attached to the 5 kg box. The box is pulled on a rough surface with the force, FA, of 36 N and is moving at a constant velocity.

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