If the particle is moving along a straight line given by relation x=2-3t+4t^2 where s is in cms.,and t in sec.its average velocity during the third sec.
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The given equation is
x=3-2t+4t^2
At t=0 the particle is at
x=3-(2*0)+(4*0)
x=3.........(i)
at t=3 the particle is at
x=3-(2*3)+(4*3^2)
x=3-6+36
x=33...(ii)
The total displacement is 33-3=3om
Total time given is 3 sec.
we know that
avg.velocity=total displ./total time
=30/3=10m/s(avarage velocity)
x=3-2t+4t^2
At t=0 the particle is at
x=3-(2*0)+(4*0)
x=3.........(i)
at t=3 the particle is at
x=3-(2*3)+(4*3^2)
x=3-6+36
x=33...(ii)
The total displacement is 33-3=3om
Total time given is 3 sec.
we know that
avg.velocity=total displ./total time
=30/3=10m/s(avarage velocity)
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