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The kinetic energy of a body changes from 12 J to 60 J due to the action of a force of 5N on an object of mass 4 kg. The work done by the force is:
  • a)
    36 J
  • b)
    60 J
  • c)
    48 J
  • d)
    24 J
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The kinetic energy of a body changes from 12 J to 60 J due to the acti...
Given:
- Initial kinetic energy (K1) = 12 J
- Final kinetic energy (K2) = 60 J
- Force (F) = 5 N
- Mass (m) = 4 kg

To Find:
The work done by the force.

Formula:
The work done (W) is given by the formula:
W = ΔK
where ΔK is the change in kinetic energy.

Calculation:
1. Change in kinetic energy (ΔK) is given by:
ΔK = K2 - K1
= 60 J - 12 J
= 48 J

2. Substitute the values of ΔK and find the work done:
W = ΔK
= 48 J

Answer:
The work done by the force is 48 J.
Therefore, the correct answer is option C) 48 J.
Free Test
Community Answer
The kinetic energy of a body changes from 12 J to 60 J due to the acti...
Change in KE is workdone by work energy theoream 60-12=48j
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The kinetic energy of a body changes from 12 J to 60 J due to the action of a force of 5N on an object of mass 4 kg. The work done by the force is:a)36 Jb)60 Jc)48 Jd)24 JCorrect answer is option 'C'. Can you explain this answer?
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