Math, asked by ragul7690pa7q96, 8 months ago

a body of mass 0.8 kg has initial velocity (3i-4j) m/sec and final velocity (-6j+2k) m/sec. find the change in K.E of the body?​

Answers

Answered by atharv2303
7

Answer:

Initial kinetic energy = 1/2mass × magnitude of initial velocity

=1/2×0.8×5=2J. (lul=√4×4×3×3=√5)

final kinetic energy=1/2×m×v=1/2×0.8×40=16J.

(lvl=√6×6+2×2=√40)

change in kinetic energy=final-initial=16-2=14J

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