Kinematics Question 270

Question: A particle moves with a velocity 6i^4j^+3k^m/s under the influence of a constant force F=20i^+15j^5k^N. The instantaneous power applied to the particle is [CBSE PMT 2000]

Options:

A) 35 J/s

B) 45 J/s

C) 25 J/s

D) 195 J/s

Show Answer

Answer:

Correct Answer: B

Solution:

P=F.v=20×6+15×(4)+(5)×3

=1206015=12075=45 J/s



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