Question

A car advertisement states that a certain car can accelerate from rest to 20 m/s in 7 seconds. How far does this car go? What is the car’s acceleration?

Answer 1

It's acceleration a = 20 / 7 = 2.857 ms^-2.

Using the equation of motion under constant acceleration:

Distance travelled = 1/2 * a * t^2

= 1/2 * 2.857 * 7^2

= 70.00 m (to the nearest hundredth).