posted by Aaron .
In a stunt for a movie, a remote controlled car is driven horizontally of the edge of a cliff at a speed of 35m/s. The car hits the ground 85m from the base of the cliff. How high is the cliff?
The car is in the air for a time
t = 85/35 = 2.429 seconds
The cliff height is how far the car falls during that time. Calculate it with:
h = (g/2)*t^2