Question

The displacement time graph of 2 particles A and B are straight line with angles of 30° and 45 ° with the time axis. What is the ratio of velocities

Answer 1

Displacement time graph consists of displacement at Y-axis and time at X-axis.
We have velocity=displacement/time.
= y/x
=tan A.
.: v1/v2= tan A/tan B
= tan 30°/ tan 45°
= 1/ root3 × root 2
$= \sqrt{3} \div \sqrt{2}$