A 2 kg body moving at 5 m/s is brought to rest by a constant resistive force in 10 m. The resistive force is:

  1. 1 N
  2. 1.25 N
  3. 2.5 N
  4. 5 N
Answer

C) 2.5 N

Work done by friction = loss in KE: fd = 12mu^2 Rightarrow f = 2.5 N. SLO P-11-B-32 · Application

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