A force acting on a baby having mass 20 Kg changes its velocity form 5 m/sec to 2 m/sec find the Amount of work done by the force...
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A force acting on a baby having mass 20 Kg changes its velocity form 5 m/sec to 2 m/sec find the Amount of work done by the force...
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Answer:
Given : Initial velocity u=5 m/s
Final velocity v=2 m/s
The work done is equal to the change in the kinetic energy of an object.
W=
2
1
m(v
2
−u
2
)
W=
2
1
×20×(2
2
−5
2
)
⟹W=−210 J
Explanation:
Given : Initial velocity u=5 m/s
Final velocity v=2 m/s
The work done is equal to the change in the kinetic energy of an object.
W=
2
1
m(v
2
−u
2
)
W=
2
1
×20×(2
2
−5
2
)
⟹W=−210 J