1. Limited time only! Sign up for a free 30min personal tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Homework Help: Rocket Train

  1. Aug 30, 2005 #1
    A rocket-driven sled running on a straight level track is used to investigate the physiological effects of large acceleration on humans. One such sled can attain a speed of 1000 miles/hr in 1.8 sec starting from rest. (a) Assume the acceleration is constant and compare it t o g . (b) What is the distance traveled in this time? For (a) would I use [itex] v_{x} = v_{x}_{0} + a_{x}t [/itex]? THe time would be [itex] t = \frac{1.8}{3600} [/itex] hours? Also what does it mean to compare it with g? For the second part I would just use [itex] x = x_{0} + v_{x}_{0}t + \frac{1}{2}a_{x}t^{2} [/itex]

    Any help is appreciated
  2. jcsd
  3. Aug 30, 2005 #2
    Don't forget to convert to SI units. The formulas you're suggesting are correct. To compare the acceleration to g is simple; divide the acceleration by g to get how many times it's greater than g.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook