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The position vector of a particle change...

The position vector of a particle changes with time according to the relation `vec(r ) (t) = 15 t^(2) hat(i) + (4 - 20 t^(2)) hat(j)` What is the magnitude of the acceleration at t = 1?

A

40

B

25

C

100

D

50

Text Solution

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The correct Answer is:
D
D
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