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: Accleration and angle

  1. Oct 14, 2004 #1
    Please help me with this question. I understand how to calculate the velocity from the given conditions but I don't know how to figure out the acceleration or the angle. Thanks!

    A cart is released from rest at the top of a perfectly frictionless air track. After an elapsed time delta t = 2.0s, the cart has traveled delta x = 32.0 cm down the track. What is the cart's acceleration? What is the angle of theta of this track?
  2. jcsd
  3. Oct 14, 2004 #2


    User Avatar
    Science Advisor
    Homework Helper

    The acceleration of the cart is the component of its weight parallel to the track divided by its mass so [itex]a = g \cos \theta[/itex]. The distance it travels is

    [tex]d = \frac {1}{2} a t^2[/tex]

    and you have enough information to find the acceleration and the angle.
  4. Oct 15, 2004 #3
    I've figured out the problem with your help. Thank you!!
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook