Physics - JEE mains PYQ

Q. Position of an ant (S in metres) moving in Y-Z plane is given by S=2t²j+5k (where t is in second). The magnitude and direction of velocity of the ant at t = 1 s will be :

(Jee mains- 2024)

1. 16 m/s in y-direction

2. 4 m/s in x- direction

3. 9 m/s in z- direction

4. 4 m/s in y-direction

4 m/s in y-direction.

v=ds/dt=4t ĵ

At t = 1 sec v = 4ĵ

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