Question

sir please give me the answer of these questions fast​

Answer 1

THIS IS SIMPLY THE RELATIVE VELOCITY CONCEPT....

1) IF THE OBJECTS MOVES TOWARDS EACH OTHER THEN AND THE THE RESULTANT VELOCITY OF AN OBJECT RESPECT TO ANOTHER WILL BE SUM OF THE TWO VELOCITIES

2) AND IF THEY MOVES IN THE SAME DIRECTION THEN THE VELOCITY OF ONE OBJECT WILL BE E THE DIFFERENCE BETWEEN THE VELOCITIES.

A)Vab=(10+20)(moving in opposite direction)=30

B)Vba=-30m/s

C)vac=10-5=5

d)vca=5-10=-5m/s(-ve sign represent the direction)

e)

vbc=-(20+5)=-25

f)

vad=10-10=0

g)

vbd=-{20+10}=30

h)vcd=-(10-5)=-5

I)vdc=10-5=5