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Q.

What is escape velocity?

Asked by Rahul Gandhi, 20 Jul '13 09:22 pm
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1.

It is the minimum velocity that is needed for a rocket to escape frm the gravitational pull of the earth........when a rocket is al set to fly into the space................! and it is 11.33 km/second........I think...........!
Answered by Bhuvana, 20 Jul '13 11:04 pm

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2.

Escape velocity is the speed that an object needs to be traveling to break free of a planet or moon's gravity well and leave it without further propulsion. For example, a spacecraft leaving the surface of Earth needs to be going 7 miles per second, or nearly 25,000 miles per hour to leave without falling back to the surface or falling into orbit.
Answered by anil garg, 20 Jul '13 10:15 pm

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3.

Escape velocity is the Velocity with which the body can be projected so as to escape from earth's gravitational force...and its value is about 11.2km app
Answered by divyashree, 21 Jul '13 08:01 pm

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4.

Escape velocity is the speed at which the kinetic energy plus the gravitational potential energy of an object is zero
Answered by Quest, 21 Jul '13 09:32 am

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5.

In physics, escape velocity is the speed at which the kinetic energy plus the gravitational potential energy of an object is zero. It is the speed needed to "break free" from the gravitational attraction of a massive body, without further propulsion.
Answered by Smile, 20 Jul '13 11:50 pm

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6.

It relates to objects escaping Earth Gravitational field.

if you had a tower and you stood on top of the tower and threw a ball, what velocity would you need to throw the ball to do the following. Please note this is assuming Wind resistance was zero. I think the calculation was based on Gravity being the only force acting on the ball.

So the thrown ball could do 1 of 3 things.
1). The ball was not thrown fast enough and the forces of gravity are able to pull the ball back to the earth.
2). The ball was thrown with precisely the amount of force that it is traveling so fast that gravity is not able to return the ball to the earth. This is the Idea of orbiting. The ball is always falling , but never hits the ground because its horizontal velocity is so great. (If the ball is thrown just a little bit harder it will escape the earths gravity field this is known as escape velocity)
3). The ball is thrown with too much force and it escapes Earths gravity and leaves earth on the tra ...more
Answered by jafar, 20 Jul '13 10:25 pm

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7.

I think it is 11.33 km/ hr!! thik se yaad nahi!! par to escape from the earth for a rocket!!
Answered by sanjay karmakar, 20 Jul '13 09:28 pm

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