Question

Find acceleration of a body of mass 10 kg when it is subjected to a horizontal force of 100
N, if it is
moving along (1) a smooth horizontal surface, (ii) a horizontal surface which produces a
frictional force
of 80 N14​

Answer 1

Explanation:

a) F=ma

100=10a

10=a

Therefore, acceleration=10m/s^2

b) Horizontal force=100N

Frictional force= -80N

Therefore, net force=20N

F=ma

20=10a

a=2

Therefore, acceleration is 2m/s^2

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