Question

12.A body is displaced by 200 m, when a force of 0.2 N acts on the body. The work done is
a) 40 Nm
b) 400 N-m
c) 4000 N - m
d) 4 N-m
13.A vehicle of mass 100kg has a kinetic energy of 5000 J at an instant. The velocity at that instanti
a) 10 m/s
b) 20 m/s
c) 30 m/s
d) 40 m/s
14.Two bodies are moving with same kinetic energy and their masses are in the ratio 1: 4. The ratio
of their velocities is
a)1:1
b)1:2
c)2:1
d)✓2:1​

Answer 1

Answer:

1). 40 Nm

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Answer 2

Answer:

1. 40Nm

Explanation:

W=FS

W=0.2×200

=20×2