NEET 2006 Physics question

PhysicsWork, Energy and PowerNEET 2006

A body of mass 3 kg is under a constant force which causes a displacement s in metres in it, given by the relation , where t is in seconds. Work done by the force in 2 seconds is:-

Answer: (3)

Solution

From : velocity , acceleration . At , ; at s, . By the work-energy theorem: $W = Δ K =

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Question ID VK-089549