Question

Darin skateboarded to the west at 8 m/s. In 7 seconds, he slowed down to 3

m/s. What was his acceleration?
O A. -1.4 m/s2 west
B. 1.4 m/s2 west
O C. -0.71 m/s2 west
D. 0.71 m/s2 west

Answer 1

C. -0.71 m/s2 west

Explanation:

Answer 2

C) -0.71m/s²

Explanation:

V = V0 + at

V = final veloctiy

V0 = Initial velocity

a = acceleration

t = time

3 = 9 + a7

-5 = a7

`-(5)/(7)` = a

a ≅ -0,71