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applied maths leaving cert 2013

  • 06-09-2013 6:08pm
    #1
    manutd102
    Registered Users, Registered Users 2 Posts: 2 ✭


    hi guys,in the marking scheme of the applied maths lc 2013 question 1)the time in the first part is half(t-t1)can someone tell why its this?


Comments

  • #2
    MmmPancakes
    Registered Users, Registered Users 2 Posts: 712 ✭✭✭MmmPancakes


    This is a Junior Cert Forum, don't expect answers here, mods will move the thread to the LC forum where you'll get some answers :)


  • #3
    yoho139
    Banned (with Prison Access) Posts: 209 ✭✭yoho139


    The acceleration f is equal to the deceleration. Since it accelerates to a certain speed, then stays at that speed for t1 seconds, the remaining time (for both acceleration and deceleration) is t-t1 (where t is the total time). Since the rate of acceleration and deceleration are equal, the remaining time is split equally between the two, giving 1/2(t-t1) for acceleration and 1/2(t-t1) for deceleration.

    E: Also, please post a link to the marking scheme with the page number next time, it'll make it easier for people trying to help you.


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