Question

A bus accelerates at -0.5 m/s2 for 12.5 seconds. If the bus had an initial speed of 31 m/s, what is its new speed?


A. 24.75 m/s
B. 12.25 m/s
C. 6.25 m/s
D. 37.25 m/s

Answer 1

@nermaljean99

Answer 2

final velocity=initial velocity+(acceleration x time) insert values and thats the answer

Answer 3

v=31+(0.5x12.5)=37.5?

Answer 4

37.25 I mean?

Answer 5

no...close though
You did the right substitution but your math is wrong.
(-.5m/s^2 times 12.5)=-6.25 then add 31 and the answer is 24.75

Answer 6

Oh okay! I see now, thank you! :)