Question
{ †ext { The } x †ext { and } y †ext { coordinates of a particle at any time } t †ext { are given } } { †ext { by } x = 7 t + 4 t ^ { 2 } †ext { and } y = 5 t †ext { , where } x †ext { and } y †ext { are in metre and } } { t †ext { in seconds. The acceleration of particle at } t = 5 s †ext { is }