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Exam question on motion

  1. May 13, 2009 #1
    1. A Cyclist travelling at a speed of 4.2 ms^-1 accelerates at 1.1 ms^-2 in a time of 7.4 seconds. What is the distance travelled???

    2. Relevant equations????

    3. The attempt at a solution: The answer is 61m but i dont know how to get that answer
  2. jcsd
  3. May 13, 2009 #2


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    I would expect you to have seen [itex]s(t)=\frac{1}{2}at^2+v_0t+s_0[/itex]?
  4. May 13, 2009 #3
    Yeh thanks i got it
  5. May 13, 2009 #4
    When i was doing it i was squaring the whole of the at instead of just the t
  6. May 13, 2009 #5


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    I see. You should really put that in the relevant equation section, that way people reading this forum could have seen what went wrong right away.
  7. May 13, 2009 #6
    Yh sorry this was my first post but thanks anyway
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