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If `a=(3t^2+2t+1)` `m/s^2` is the expression according to which the acceleration of a particle varies. Then- `a=(3t^2+2t+1)` `(m)/(s^2)` Q. The expression for instantaneous velocity at any time `t` will be (if the particle was initially at rest)-A. `t^(3)+2t+1`B. `t^(3)+t+1`C. `t^(3)+t^(2)+1`D. `t^(3)+t^(2)+t+C` |
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Answer» Correct Answer - C `a=3t^(2)+2t+1` `underset(0)overset(1)intdv=underset(0)overset(1)int3t^(2)+2t+1dt , v=t^(3)+t^(2)+t` |
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