Home
Class 12
PHYSICS
If the plane has an eastward heading, an...

If the plane has an eastward heading, and a `20 m//s` wind blows towards the southwest, then the plane’s speed is –

A

`80 m//s`

B

more than `80 m//s` but less than `100 m//s`

C

`100 m//s`

D

more than 100 `m//s`

Text Solution

Verified by Experts

Doubtnut Promotions Banner Mobile Dark
|

Topper's Solved these Questions

Similar Questions

Explore conceptually related problems

The pilot maintains an eastward heading while a 20 m//s wind blows northward. The plane’s velocity is deflected from due east by what angle?

A plane moves due east while the pilot points the plane somewhat south of east, toward a steady wind that blows to the northeast. The plane has velocity vecv_(PW) relative to the wind, with an airspeed (speed relative to the wind) of 215 km/h, directed at angle theta south of east. The wind has velocity vecv_(WG) is relative to the ground with speed 65.0 km/h, directed 20.0^@ cast of north. What is the magnitude of the velocity vec_(PG) of the plane relative to the ground, and what is theta ?

Knowledge Check

  • The captain of a plane wishes to proceed due west. The cruising speed of the plane is 245 m/s relative to the air. A weather report indicates that a 38.0 m/s wind is blowing from the south to the north. In what direction, measured with respect to due west, should the pilot head the plane relative to the air?

    A
    `81.1^(@)` south of west
    B
    `17.8^(@)` south of west
    C
    `8.92^(@)` south of west
    D
    `8.82^(@)` north of west

  • A boat is moving towards south with veloctity 3 m//s with respect to still water and river is flowing towards east with velocity 3 m//s and the wind is blowing towards south-east with velocoity 3 sqrt2 m//s . The direction of the flag blown over by the wind, hoisted on the boat is :

    A
    north-west
    B
    south-east
    C
    the flag will not blow
    D
    north

  • Assertion (A): If the speed of a car moving towards the east is 20 m s^(-1) , its velocity is 20 m s^(-1) towards the east. Reason ( R): The velocity of a body is speed in a specified direction.

    A
    Both A and R are true and R is the correct explanation of A.
    B
    Both A and R are true, but is not the correct explanation of A.
    C
    A is true but R is false.
    D
    Both A and R are false.

    • Similar Questions

    Explore conceptually related problems

    An aeroplane pilot wishes to fly due west A wind of 100 km h^-1 is blowing towards south. (a) If the speed of the plane (its speed in still air) is 300 km h^-1 in which direction should the pilot head ? (b) What is the speed of the plane with respect tom ground ? Illustrate with a vector diagram.

    A solid sphere rolls up a plane inclined at 45^(@) to the horizontal. If the speed of its centre of mass at the bottom of the plane is 5 m/s , find how far the sphere travels up the plane.

    A plane moves in windy weather due east while the pilot the plane somewhat south of east. The wind is blowing at 50 km/h directed 30^(@) east of north, while the palne moves at 200 km/h relative to the wind . What is the velocity of the plane relative to the ground and what is the direction in which the pilot points the palne ?

    A trajectory of a fighter plane is given by the relation y = x + c (when and y represents horizontal and vertical axes). The plane is moving with a constant speed of 30sqrt2 m//s . A machine gun is mounted on the plane. When the plane is at a height of 240m from the ground, a bullet is fired from the machine-gun with a speed of 10 m/s with respect to the plane in the vertical upward direction. (a) Calculate the time after which it will hit the ground (b) Find the maximum height reached by the bullet.

    A sailor in a boat, which is going due east with a speed of 8m//s observes that a submarine is heading towards north at a speed of 12m//s and sinking at a rate of 2 m//s .The commander of submarine observes a helicopter ascending at a rate of 5 m//s and heading towards west with 4 m//s .Find the speed of the helicopter with respect to boat.

    Home
    Profile