car is traveling at 20 meters/second and is brought to rest by applying brakes over a period of 4 seconds. What is its average acceleration over this time interval? It has no acceleration. Its acceler

car is traveling at 20 meters/second and is brought to rest by applying brakes over a period of 4 seconds. What is its average acceleration over this time interval?

It has no acceleration.

Its acceleration is 20 meters/second2.

Its acceleration is -5 meters/second2.

Its acceleration is 5 meters.