Question

19. An aeroplane flies with speed 400 km/hr along east and
then with speed 300 km/hr along south for equal times.
What is the average (i) speed (ii) velocity of the plane?
If the plane moves back to the place of its start by the
shortest route, what is the net velocity of the plane?​

Answer 1

Answer:

average speed is 350 km per HR

and velocity is 250 km per hour

Answer 2

Answer:

Given,

The speed of the aeroplane 400km/h

The speed of the wind is 200km/h

So the aeroplane and the wind make a angle=θ to each other,

Thus the resultant velocity,

V

r

sinθ=

V

a

V

w

=

400

200

=

2

1

θ=sin

−1

2

1

=30

0