Question

write the nature of acceleration of body
$x = 3t^{3} + 5t^{2} + 7t + 3$
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Answer 1

v=dx/dt = 9t^2 +10t + 7 and a=dv/dt= 18t+10 so as we can see initial acceleration(at t=0) is 10m/s^2 and it is changing with time hence it is non-uniformly accelerated motion and acceleration is always positive