Answer:
[tex]a= 0.5 m/s^{2}[/tex]
Explanation:
Your initial velocity ([tex]V_{o}[/tex]) is 10 m/s, your time is 20 seconds. Although it is not explicitly mentioned in the problem, since you know the car comes to a stop, your final velocity ([tex]V_{f}[/tex]) is 0 m/s.
The equation you can use to solve for acceleration (a) is [tex]V_{f} = V_{o} +at[/tex]
1. Plug in the numbers you do have, so your equation will look like this:
0=10+a(20)
2. Solve for a.
-10= 20a
-10/20=a
-0.5= a
a = -0.5 [tex]m/s^{2}[/tex]
