First slide
Position Path Length (Distance) And Displacement
Question

If the velocity of a particle is u = At + Bt2,where A and B ate constants, then the distance travelled by it between 1s and 2s is :

Easy
Solution

V=AtBt2dsdt=At+Bt2
0sds=12At+Bt2dt
s=A22212+B32313=3A2+7B3

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