Speed at which the balloon is ascending, v = 20 m/s
Height of balloon from the ground = 100 m
With respect to ground, the velocity of the packet will be 20 m/sec upward.
With respect to balloon, its velocity will be zero.
The magnitude of the relative velocity of B w.r.t A is,
vr =
Two particles A and B are in motion. If the relative velocity of A w.r.t. B is , then what is the relative velocity of B w.r.t.A?
The relative velocity of B w.r.to A is same in magnitude but opposite in direction.
That is the relative velocity is -.
We have,
Distance moved, s = 2 km
Velocity, u1 = 40 km/hr
u2 = v
Average velocity =
On solving the equation, we get
v = 60 km/hr