A 1000 kg body moves at 20 m/s. Its kinetic energy is:

  1. 2 10^5 J
  2. 4 10^5 J
  3. 1 10^5 J
  4. 10,000 J
Answer

A) 2 10^5 J

K = 12mv^2 = 12(1000)(20)^2 = 2 10^5 J. SLO P-11-B-29 · Application

Physics MCQ · More Work and Energy MCQs · Practise