Motion

Section: Physics

Question : 4 of 12

Marks: +1, -0

Starting at time t=0 from the origin with speed 1 ms−1, a particle follows a two-dimensionaltrajectory in the x -y plane so that its coordinates are related by the equation y=

. The x and ycomponents of its acceleration are denoted by ax and a ‌y, respectively. Then

[JEE Adv 2020 P2]

ax=1 ms−2 implies that when the particle is at the origin, ay=1 ms−2
ax=0 implies ay=1 ms−2 at all times
at t=0, the particle's velocity points in the x -direction
ax=0 implies that at t=1 s, the angle between the particle's velocity and the x axis is 45°

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