1. Not finding help here? Sign up for a free 30min 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!

Force question on a car

  1. Oct 7, 2008 #1
    A car travels forward with constant velocity. It goes over a small stone, which gets stuck in the groove of a tire. The initial acceleration of the stone, as it leaves the surface of the road, is
    (A) vertically upward
    (B) horizontally forward
    (C) horizontally backward
    (D) zero
    (E) upward and forward, at approximately 45° to the horizontal

    I think it's A because as it leaves the surface of the road it is on the bottom of the circle, and centripetal force points vertically up. Is this correct?
  2. jcsd
  3. Oct 8, 2008 #2
    That looks fine to me, however; if the car was accelerating forwards and not travelling at a constant velocity, you can see that there would be vehicular acceleration aswell as centripetal acceleration such that the answer would look a lot more like E.
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?