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Homework Help: Acceleration of a particle

  1. Dec 10, 2011 #1
    1. The problem statement, all variables and given/known data
    the acceleration of a particle is given by a=B√t where B=1.25, with the appropriate units. At t=0s, v=7m/s and x=1.5m

    a) what are the dimensions for "B" appearing in the formula a=B√t ?

    b) what is the speed as a function of time?

    c) What is the position as a function of time?

    d) what are the acceleration, speed, and position at t=6.75s?

    e) what is the average speed for the time interval t=0s to t=6.75s?

    Really need a quick explanation of this problem... no idea where to start!!


    2. Relevant equations
    i have no idea :(


    3. The attempt at a solution
     
  2. jcsd
  3. Dec 10, 2011 #2

    Simon Bridge

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    Science Advisor
    Homework Helper

    Welcome to PF. Sometimes the difficulty is just getting started.

    a. "dimensions" is this context, is related to the units - work out the units of B, then express them in terms of M L and T (mass, length and time).

    b. how is speed related to acceleration?

    c. how is distance related to speed

    d & e come from the last answers.
     
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