a car intially traveling at 90km/hr slows down at a constant .5m/s^2 just by "letting up on the gas"

Question

calculate a) the distance the car coasts before it stops, b) the time it takes to stop

Answer 1

a) x = V²/2a

b) t = V/a

These eqs will give you the right answer, but only if you convert km/hr into m/s: (Hint: Divide by 3.6)