Kinematics 5 Question 3
5. The position vector of particle changes with time according to the relation . What is the magnitude of the acceleration (in ) at ?
(a) 50
(b) 100
(c) 25
(d) 40
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Answer:
Correct Answer: 5. (a)
Solution:
- Position vector of particle is given as
Velocity of particle is
Acceleration of particle is
So, magnitude of acceleration at