Answer to Question #314829 in Physics for petite

Question #314829

A particle moves in a straight line with an initial

velocity of 30 m/s and constant acceleration 30 m/s2

.

(a) What is its displacement at t = 5 s? (b) What is its

velocity at this same time?


1
Expert's answer
2022-03-20T18:47:31-0400

(a) What is its displacement at t = 5 s?

d=v0t+at2/2=30×5+30×52/2=525md=v_0t+at^2/2\\ =30\times 5+30\times 5^2/2=525\:\rm m

(b) What is its velocity at this same time?

v=v0+at=30+30×5=180m/sv=v_0+at\\ =30+30\times 5=180\:\rm m/s

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