Pathfinder Impulse & Momentum MCQ 2

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India Santosh Sir IITK (Apex Physics)
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A mountain climber is siding down a vertical rope. Her total mass, including equipment, is 65 kg. By adjusting frictional force of the rope, she controls the force that the rope exerts on her. For a 2.0 s interval, this force T is shown as a function of time t in the given graph. What is change in her speed in this interval ? Assuming acceleration of free fall to be 10 m/s2 and neglect air resistance.



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