Question

Particle
A is on x-axis at x=+6m and
moving towards the origin with a
speed of 1.5m/s. Another particle B is
also on x-axis at x=-4m which is
also moving towards the origin, the
relative velocity of an with respect to B is​

Answer 1

Answer:

Position is given as   x=a+bt2=8.5+2.5t2

Position at t=2 s,  x2=8.5+2.5(2)2=18.5 m

Position at t=4 s,   x1=8.5+2.5(4)2=48.5 m

Displacement  S=x2−x1=48.5−18.5=30 m

Time taken  t=4−2=2 s

Average velocity  Vavg=tS=230=15 m/s