NEET Physics Motion in A Plane Questions Solved

The x and y coordinates of a particle at any time t are given by x=7t+4t2 and y = 5t, where x and y are in metre and t in seconds. The acceleration of particle at t = 5s is  

(1) Zero

(2) 8 m/s2

(3) 20 m/s2

(4) 40 m/s2

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