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5.work,energy,power and collision — Physics STD 11 Science — Question

Rajasthan BoardEnglish MediumSTD 11 SciencePhysics5.work,energy,power and collision1 Mark
MCQ
The adjoining diagram shows the velocity versus time plot for a particle. The work done by the force on the particle is positive from
  • ✓
    $A$ to $B$
  • B
    $B$ to $C$
  • C
    $C$ to $D$
  • D
    $D$ to $E$
✓

Answer

Correct option: A.
$A$ to $B$
a
(a)From the graph it is clear that force is acting on the particle in the region $AB$ and due to this force kinetic energy (velocity) of the particle increases. So the work done by the force is positive.

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