The x and y coordinates of a particles at any time t are given by x = 7 t + 4 t 2 and y = 5 t . where x and y are in metre and t in second. The acceleration of particle at t = 5 s is

Question

The x and y coordinates of a particles at any time t are given by x = 7 t + 4 t 2 and y = 5 t . where x and y are in metre and t in second. The acceleration of particle at t = 5 s is, zero, 8 m s - 2, 20 m s - 2, 40 m s - 2

MARKS App · Accepted Answer

a = a x 2 + a y 2 = d 2 x dt 2 2 + d 2 y dt 2 2 1 2 Hence, a = d 2 x d t 2 = 8 m s - 2

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