Question

The velocity of Desmond’s car changes from 20 meters/second to 10 meters/second. The change happens in 5 seconds. What’s the acceleration of the car? Use .
A.
4 m/s2
B.
2 m/s2
C.
-2 m/s2
D.
-4 m/s2

Answer 1

Answer:

C.) - 2m/s²

Explanation:

Given -

• Initial velocity (u) = 20m/s
• Final velocity (v) = 10m/s
• Time (t) = 5 seconds

Solution -

Acceleration (a) -

• a= v-u/t
• 10-20/5
• -10/5
• -2m/s²

Acceleration is - 2m/s²