Physics · Laws of Motion
A heavy wooden block is pushed across a rough floor and the applied force is gradually increased. At first, the block does not move (Stage 1). Then, at a certain force, the block just begins to slide (Stage 2). Finally, when the block is sliding, it moves with constant velocity (Stage 3). Which of the following correctly describes the net force situation in these three stages?
- 1Stage 1 – Unbalanced, Stage 2 – Balanced, Stage 3 – Balanced
- 2Stage 1 – Balanced, Stage 2 – Unbalanced, Stage 3 – Balanced✓
- 3Stage 1 – Balanced, Stage 2 – Balanced, Stage 3 – Unbalanced
- 4Stage 1 – Unbalanced, Stage 2 – Unbalanced, Stage 3 – Balanced
Correct answer
Stage 1 – Balanced, Stage 2 – Unbalanced, Stage 3 – Balanced
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