Question

A car is travelling at 30m/s. Suddenly, the driver sees a danger ahead and decides to do an emergency stop. The driver's reaction time is 0.6 s. Calculate how far the car travels before the driver starts pressing the brake pedal.​

Answer 1

The car travels 18 meters before the driver starts pressing the brake pedal.

Given:

Speed of the car = 30 m/s

Reaction time = 0.6 s

To Find:

Distance travelled by the car before the driver starts pressing the brake pedal.

Formula:

`\boxed{ \rm Distance= Speed * Time}`

By substituting the value in the formula we get:

`Distance= 30 * 0.6 \\ \\ = 18 \: m`

Answer 2

Step-by-step explanation:

Given:

V =30 m/s

t = 0.6 s

_________

D - ?

Distance:

D = V·t = 30·0.6 = 18 m