# Physics Help

## Chat Forum Talk about topics not related to MapleStory

Assuming you are driving down the highway at 65 mph(28.9 m/s), how far would you travel between the time you saw the need for an emergency stop and actually started lifting your foot off the accelerator? (This does not include the additional time needed to move your foot over to the brakes and stop the car.)

Thanks~

# Replies

Level 187 Scania Marksman
distance = reaction time * speed

note: this is assuming that you're travelling at a constant speed while your foot is pressing on the accelerator
Sep 15 2013
distance = reaction time * speed

note: this is assuming that you're travelling at a constant speed while your foot is pressing on the accelerator[/quote]
Wouldn't I need the reaction time to do that? All they gave me was the speed.
Sep 15 2013
Level 198 Galicia Wild Hunter 4
isn't it 65 / 28.9?
Sep 15 2013
Level 212 Windia Hayato 4
isn't it 65 / 28.9?[/quote]

65mile/h * 28.9m/s = 1878.5 milemeter/hoursecond.
Yes, thats totally a unit of distance.
Sep 15 2013
Level 200 Khaini Night Lord
E) Not enough information given

this is not a valid question, different people react different ways
Sep 15 2013
Level 208 Bera Zero Transcendent EvoLovE Guild
Pretty much what @GHSNinja said. Unless your teacher gave you a time for a person's reaction, you can't do it.
Sep 15 2013