Rona is driving a car, she travels a 40-90 km/hr and accelerates at 2m/s. How long will take for her to stop the car?

1 answer

a = (Vf-Vi)/t (where Vf = final velocity and Vi = initial velocity).
So t = (Vf-Vi)/a.

When the car is stopped, the velocity is 0. t=?

Make sure you use the same units.