# Reaction time

#### Draggu

1. The problem statement, all variables and given/known data
Use your reaction time to determine how far a car you are driving at 100km/h would travel between the time you see an emergency and the time you slam on your brakes.

2. Relevant equations

3. The attempt at a solution
Given:

v = 100km/h
d = ?
t = 0.27 s

d = v*t
d = 100 * 0.27
=27?

Somehow I think this is wrong.

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#### hage567

Homework Helper
Watch your units. They need to be consistent with each other to get a meaningful answer.

#### Draggu

Watch your units. They need to be consistent with each other to get a meaningful answer.
Ah true, so 100 * 0.000075
= 0.0075

Therefore, i will travel 0.0075 kilometres during that time.

"Reaction time"

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