While you are driving at a constant speed of 30 mph (or 44 ft/s), what distance do you travel if it took you 0.8 s to realize that you have to slam on the brakes to avoid hitting a person that runs onto the road in front of you?

Explanation:

Given:

Distance travelled during the time span:

Actually the distance travelled before stopping the car will be greater than this distance, because after the application of brakes the car will take some time to come to rest.

ι вєℓιєνє ιт ιѕ тнє fιяѕт ¢нσι¢є(α.)

нє ѕнσυℓ∂ ѕмιℓє ρσℓιтℓу αи∂ ѕρєαк тσ тнє ρєяѕσи ωнσ ιѕ ιитєяяυριиg αfтєя тнє ∂ιѕ¢υѕѕισи

нσρє ι ¢συℓ∂ нєℓρ.

v=ir = 3x15 =45 v