NEET UG PHYSICS MCQ: MOTION IN A STRAIGHT LINE

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Application +4 | -1

The position of a particle x (in metres) at a time t seconds is given by the relation

\vec r = \left( {3t\hat i - {t^2}\hat j + 4\hat k} \right)

. Calculate the magnitude of velocity of the particle after 5 seconds

View answer and explanation

Correct option: D

10.44

Option D (10.44) is correct because it is the magnitude of the velocity vector calculated by differentiating the position vector and substituting t=5s.

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