Laws Of Motion Question 223

Question: A body of mass 2 kg is moving with a velocity 8 m/s on a smooth surface. If it is to be brought to rest in 4 seconds, then the force to be applied is[Pb. PMT 2000]

Options:

A) 8 N

B) 4 N

C) 2 N

D) 1 N

Show Answer

Answer:

Correct Answer: B

Solution:

$ F=ma=\frac{m(u-v)}{t}=\frac{2\times (8-0)}{4}=4N $



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