Home
Class 11
PHYSICS
The escape speed of a projectile on the ...

The escape speed of a projectile on the earth's surface is 11.2 `km` `s^(-1)`. A body is projected out with thrice this speed. What is the speed of the body far away from the earth? Ignore the presence of the sun and other planets.

A

`22.4kms^(-1)`

B

`31.7kms^(-1)`

C

`33.6kms^(-1)`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
`v=sqrt((3v_e)^2-v_e^2)=2sqrtxxv_e`
`=31.7 km//sec`
Promotional Banner

Similar Questions

Explore conceptually related problems

The escapoe speed of a body on the earth's surface is 11.2kms^(-1) . A body is projected with thrice of thrice of this speed. The speed of the body when it escape the gravitational pull of earth is

The escape speed of a body from the earth depends upon

The escape speed of a body from the surface of the Earth is

The escape speed of a particle on the surface of the earth is 11.2km/second. A body is projectwith thrice this speed from the surface of the earth. What is the speed of the body in the outer space far away from the earth?

The value of escape speed from the surface of earth is

Does the escape speed of a body from the Earth depend on ( the mass of the body. Explain your answer.

The escape velocity of a body from the earth is 11.2 km//s . If a body is projected with a velocity twice its escape velocity, then the velocity of the body at infinity is (in km//s )

The escape speed from earth's surface is 11kms^(-1) . A certain planet has a radius twice that of earth but its mean density is the same as that of the earth. Find the value of the escape speed from the planet.