Question

Car is driving with a speed of 36km/h. Then the car stops completely in 2 seconds. What is the negative acceleration of the car?

Answer 1

initial velocity= 36km/hr =36×1000/60×60=10m/s.

final velocity= 0

time taken = 2seconds

acceleration= final velocity-initial velocity ÷time

= 0-10÷2

=-10÷2

=-5m/s

therefore negative acceleration=(-5m/s)