Question

What is the acceleration of an object if it goes from a velocity of +25 m/s to rest in 5.0 s?

A.
–5 m/s2

B.
+5 m/s2

C.
–25 m/s2

D.
+25 m/s2

Answer 1

\[a _{avg} = \frac{ \Delta v }{ \Delta t }\]

the average acceleration is precisely the change in velocity divided by the change in time

Answer 2

Did not answer my question

Answer 3

–5 m/s2