Question

Answer this Q plzzzz no spams...I will mark u if I understood ..xd....
$help \: me \: plzz$
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Answer 1

v=3t²+2t+10

Let us first do the b part as its easy...XD

b.we know that

a=dv/dt

a=d(3t²+2t+10)/dt

a=6t+2

now coming to the a part

a.we know that

v=dx/dt

where x=displacement

v.dt=dx

integrating on both sides

(I hope u know basic integration)

$\int\limits^t_0 {(10+2t+3t^2)} \, dt=\int\limits^x_a \, dx\\\\where\ a=20\\10t+2t^2/2+3t^3/3=x-20$

10t+t²+t³=x-20

putting t=1

10+1+1=x+20

x=32 m

Hope this helps.