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    A car starts from a point A. At time t s after leaving A, the distance of the car from A is s m, where s = 30t-0.4t^2 , 0<=t<=25. The car reachers the point B when t=25.

    a. Find distance AB

    b.Show that the car travels with a constant acceleration and state the vale of this acceleration.

    A runner passes through B when t=0 with an initial velocity of 2 ms-1 running directly towards A. the runner has a constant acceleration of 0.1 ms-2.

    c. Find the distance from A at which the runner and the car pass one another .

    Any help is appreciated. Thank you
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    (Original post by ram29)
    A car starts from a point A. At time t s after leaving A, the distance of the car from A is s m, where s = 30t-0.4t^2 , 0<=t<=25. The car reachers the point B when t=25.

    a. Find distance AB

    b.Show that the car travels with a constant acceleration and state the vale of this acceleration.

    A runner passes through B when t=0 with an initial velocity of 2 ms-1 running directly towards A. the runner has a constant acceleration of 0.1 ms-2.

    c. Find the distance from A at which the runner and the car pass one another .

    Any help is appreciated. Thank you
    What have you tried?
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    (Original post by ram29)
    A car starts from a point A. At time t s after leaving A, the distance of the car from A is s m, where s = 30t-0.4t^2 , 0<=t<=25. The car reachers the point B when t=25.

    a. Find distance AB

    b.Show that the car travels with a constant acceleration and state the vale of this acceleration.

    A runner passes through B when t=0 with an initial velocity of 2 ms-1 running directly towards A. the runner has a constant acceleration of 0.1 ms-2.

    c. Find the distance from A at which the runner and the car pass one another .


    Any help is appreciated. Thank you
    for part a. u just sub the value given for t ie t= 25 into the equation for s to find distance ab
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    (Original post by ram29)
    A car starts from a point A. At time t s after leaving A, the distance of the car from A is s m, where s = 30t-0.4t^2 , 0<=t<=25. The car reachers the point B when t=25.

    a. Find distance AB

    b.Show that the car travels with a constant acceleration and state the vale of this acceleration.

    A runner passes through B when t=0 with an initial velocity of 2 ms-1 running directly towards A. the runner has a constant acceleration of 0.1 ms-2.

    c. Find the distance from A at which the runner and the car pass one another .

    Any help is appreciated. Thank you
    is this M1 or M2
    cuz if it is M2 then for part b u can differentiate to show a is constant.
 
 
 

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