NTSE Stage 2 SAT 2014 Question Paper

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Question : 32 of 100

Marks: +1, -0

A force of 10 N is applied on an object of mass 1 kg of 2s, which was initially at rest. What is the work done on the object by the force ?

200 J
20 J
16 J
180 J

Solution:

a=10m/

\s\e\c^2

\S=\u\t+1/2\a\t^2

\S=0+1/2(10)×(4)

⇒

\S=20

\w=(20)×(10)=200

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