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Solution


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                                                       [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  

Ans.

(4)