if the particle is moving along a straight line given by S=2-3t+4tcube where S is in cm and T is in sec its average velocity during the third sec?
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differentiating with respect to time
dx/dt=-3+8t
Now velocity at t=3
dv=-3+24
dv=21
dx/dt=-3+8t
Now velocity at t=3
dv=-3+24
dv=21
Gowthambalaji:
asked average velocity
options 1) 73cm/s 2)80cm/s 3)85cm/s 4) 90cm/s
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