A block is pushed along a horizontal table with an initial speed of

PHYSICS · Subjective · CBSE · Physics · Work, Energy and Power · Work, Energy and Power

Problem

2.0\,\text{kg}

block is pushed along a horizontal table with an initial speed of

6.0\,\text{m}\,\text{s}^{-1}

. The coefficient of kinetic friction between the block and the table is

0.25

. (a) Derive an expression for the stopping distance

s

of a body of mass

m

that slides on a horizontal rough surface with coefficient of kinetic friction

\mu_{k}

and initial speed

v_{0}

. (b) Using your result from part (a), calculate the stopping distance of the block on the table. (c) How much kinetic energy is converted to other forms during the motion? State the numerical value and its unit.

Related theory

Kinetic Energy
Energy Losses & Efficiency
Work
Work, energy and power
Kinetic energy and the work-energy theorem
Work and kinetic energy: Work–energy theorem

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