a car is moving down a street at 55km/h.A child suddenly runs into the street. If it takes a driver 0.75s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?

Answer 1

55 km/h = 55000m/3600 s = 15.28 m/s.
Multiply that by the reaction time (0.75 s) for the number of meters travelled before slowing down.

Answer 2

11.46m