JEE Main & Advanced
Sample Paper
JEE Main - Mock Test - 35
question_answer
A particle starts from origin at \[t=0\] with a velocity \[5/m{{s}^{-1}}\] and moves in \[x-y\] plane under the action of a force which produces a constant acceleration of \[3\hat{i}+2\hat{j}m{{s}^{-2}}\]. The y-coordinate of the particle at the instant when its x-coordinate is 84 m, is
A)12 m
B)24 m
C)36 m
D)48 m
Correct Answer:
C
Solution :
The position of the particle is given by where, is the position vector at and is the velocity at Here, Compare it with , we get On solving, we get At