pleazzzzzzzzzzzzzzzzz

 

 

make x axis as time and y axis as acc.

draw a somewhat eqilateral triangle in first quadrant such thatthe base is 4 units at x axis from origin and height is also 4 units at y axis.from 4 at x axis draw rectangle in 4 quadrant with length as 4 to 8 on x axis and bregth is -1 in 4 quadrant.

 

initial speed is 3 . what is speed at 8 sec.

 

ans----7