Question:
A body of mass 1 kg is moving with a velocity 10 m/s due to a constant force on a horizontal rough surface having coefficient of kinetic friction 0.4. If the constant force is removed, the body comes to rest in a time:
A body of mass 1 kg is moving with a velocity 10 m/s due to a constant force on a horizontal rough surface having coefficient of kinetic friction 0.4. If the constant force is removed, the body comes to rest in a time:
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When solving for time to come to rest, use the frictional force to calculate the deceleration and then apply the equations of motion.
Updated On: May 15, 2025
- 2.5 s
- 4 s
- 0.4 s
- 0.25 s
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The Correct Option is A
Solution and Explanation
By using the formula for motion with friction, we can calculate the time taken for the body to come to rest. The acceleration due to friction is determined, and the time is found to be 2.5 s.
Thus, the correct answer is option (1).
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