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: Acceleration at the peak

  1. Jul 6, 2009 #1
    A baseball is thrown upwards. What is the acceleration at the highest point?

    i thought the acceleration would be 0 since velocity at the highest point is 0 and the derivative of velocity is acceleration. Since velocity is not changing, shouldn't acceleration be 0?

    However the answer is supposed to be 9.8 m/s^2 downwards. why is the answer the acceleration of gravity and not 0?
  2. jcsd
  3. Jul 6, 2009 #2


    User Avatar
    Homework Helper

    Velocity at the top is 0. But the rate of change is still 9.8 m/s2 until it hits something, right?
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook