Question

A car changes velocity from 60 km/h to 40 km/h in 0.4 h. What is the car's acceleration? Is the car accelerating or decelerating?

Answer 1

The car is decelerating because speed is decreasing and you also get the answer in negative

Step-by-step explanation:

acceleration= change in speed(final speed-initial speed)/time

final speed=40km/h

initial speed=60km/h

40-60/0.4

-20/0.4= -50km/h^2