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26-04-2020
Physics

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A truck accelerates at 4.7 m/s for 150 m, reaching a final velocity of 47 m/s. What was it’s initial velocity?

A truck accelerates at 47 ms for 150 m reaching a final velocity of 47 ms What was its initial velocity class=

Respuesta :

Chelboy Chelboy

01-05-2020

Answer:

We can use option C

Initial velocity=28.3m/s

Explanation:

acceleration(a)=4.7m/s^2

distance(d)=150m

Final velocity(v)=47m/s

Initial velocity(u)=?

V^2=u^2+2xaxd

47^2=u^2+2x4.7x150

2209=u^2+1410

U^2=2209-1410

U^2=799

U=√(799)

u=28.3m/s

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