Can any one please tell at what velocity should we throw any object so that it doesn't come back ?

Question

PLZZZZ! answerr

Answer 1

You should attain the escape velocity. On the surface of the Earth, the escape velocity is about 11.2 kilometers per second , which is approximately 34 times the speed of sound. However, at 9,000 km altitude in "space", it is slightly less than 7.1 km/s.

Answer 2

the velocity which should give to an object so that the object does'nt come back, is called escape velocity and it's valve is equal to 11km/sec and in this case the object is free of earth gravitational force and allowed to move freely...

ur reply

Answer 3

Well this question is simple, any velocity will do as long as you are not throwing a small animal that will come back or some robot that is bent on killing every human, trust me those will always come back.

Answer 4

6.9 miles per second.

Answer 5

if it isn't a booarang, and your throw it, it should not come back.

Answer 6

To throw an object so it doesn't come back it's kinetic energy after launching must be equal to it's potential energy on the Earth's surface or more

kinetic energy = (1\2) mv^2

potential energy = mgd (mass*acceleration due to gravity *distance (from the center of the earth))

In mathmatical form

(1\2) mv^2 = mgd = mgr

As r is Earth's radius

m is canceled from both sides

(1\2)V^2 = gr

So V^2 = 2gr

v= sqrt(2gr)

= sqrt(2*9.8*6.36*(10^6))

=11.16*10^3 m\s = 11.16 km\s

Answer 7

1) Not all, in the 1st statement, you should mention the velocity.

2)You have to throw at least at ~7.5 km/s to bring the object to the near orbit of the Earth

3)Theoretically, the orbit can be just above the surface. But there is the dense atmosphere so all the satellites should fly at about more than ~200km.

4)The shape of orbit normally eliptical. Satellites need to use jet engines to drive themselves into circle orbits.

5)That's the escape velocity : about 11.2km/s.

Hope this helps.

Answer 8

11.2km/s

Answer 9

there is no such speed becos gravitation has infinite range and the object will definately come back