Question

A variable force 'F' is applied to a body of mass 6 kg at rest. The body moves along x-axis as shown. The speed of the body at x = 5 m and x = 6 m respectively are:
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Answer 1

Answer:

b is the ans

Explanation

W = F × x

For x = 0 to x = 5

w=1/2×4×[5+1]

W = 12 J

From work-energy theorem

W = ΔKE

v = 2 m/s

From x = 5 m to x = 6 m

∵ F = 0

∴ v = constant = 2 m