A particle moves with a velocity of 4 i ^ − 2 j ^ + 2 k ^ m s - 1 under the influence of a constant force F → = 10 i ^ + 3 j ^ - 2 k ^ N . The instantaneous power applied to the particle is

Question

A particle moves with a velocity of 4 i ^ − 2 j ^ + 2 k ^ m s - 1 under the influence of a constant force F → = 10 i ^ + 3 j ^ - 2 k ^ N . The instantaneous power applied to the particle is,

MARKS App · Accepted Answer

P = F → ⋅ v → = 4 i ^ - 2 j ^ + 2 k ^ · 10 i ^ + 3 j ^ - 2 k ^ = 40 - 6 - 4 ∴ P = 30 W

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