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