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

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

anonymous · Answer

@nermaljean99

anonymous · Answer

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

anonymous · Answer

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

anonymous · Answer

37.25 I mean?

anonymous · Answer

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

anonymous · Answer

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