Question 3 — Two blocks P and - Questions at the end of the chapter - Chapter 6 - How Forces Affect Motion (Exploration)

Last updated at June 28, 2026 by

Blocks P and Q on a smooth surface. On block P, two forces 4 N and 5 N act in opposite directions; block Q moves with constant velocity. Which is correct? (i) P has a net force, Q does not. (ii) P has no net force, Q does. (iii) Both have a net force. (iv) Neither has a net force.
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The correct option is (i) P experiences a net force and Q does not.

On P, the two opposite forces (5 N and 4 N) are unequal, leaving a net force of 1 N. Q moves at constant velocity, so its net force is zero.

← Back to concept: 6.2 Balanced and Unbalanced Forces
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