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JEE Advance - Physics (1979)

1
The dispalcement x of particle moving in one direction, under the action of a constant force is related to the time t by the equation $$t = \sqrt x + 3$$
where x is in meters and t in seconds. Find

(i) The displacement of the particle when its velocity is zero, and

(ii) The work done by the force in the first 6 seconds.

Answer
(A)
Displacement is 0m when velocity is zero, and work done in the first 6 seconds is 0J
2
Answer the following giving reason in brief:

Is the time variation of position, shown in the figure observed in nature?

IIT-JEE 1979 Physics - Motion Question 14 English
Answer
(C)
No, it's not possible because an object cannot be at two different positions at the same time.