muchukund asked in Science & MathematicsPhysics · 1 decade ago

# If a ball thrown with a velocity11.2 km/sec .What will happen?

### 8 Answers

Relevance
• RickB
Lv 7
1 decade ago
Favorite Answer

11.2 km/sec is the "escape velocity" from the surface of the earth. When something moves at escape velocity, it means it has enough momentum (just by coasting) to "outrun" the earth's gravity and "escape"--that is, it will continue to move ever farther away from the earth. The earth's gravity WILL continue to slow the ball down; but it will never slow it down enough to make the ball stop and turn around and come back down.

In reality, if you threw a ball that fast from the surface of the earth, the air friction would be so great that the ball would burn up before it reached outer space. Or if any fragment of the ball remained, the air friction would haved slowed it to below escape velocity; which means the fragment would soon either fall back down to the earth's surface, or fall into an orbit around the earth. In either case, it would not escape. But if you could carry the ball 60 miles or so above the surface, where there's no air, and THEN throw it at 11.2 km/sec, it would fly away from the earth forever.

BUT there's a catch. The SUN also has an escape velocity. At the position where the earth is, the sun's escape velocity is 42.1 km/sec. Which means: If you threw the ball faster than 11.2 km/sec but slower than 42.1 km/sec, the ball would escape the earth but then fall into an orbit around the sun. You would have to throw the ball at faster than 42.1 km/sec in order to make it completely escape the solar system.

• 1 decade ago

I believe that is the escape velocity of the earth. If you neglect the effects of atmospheric friction (which would most certiantly cause the ball to burst into flame and burn up) then the ball has just enough velocity to escape earth's gravity.

• 1 decade ago

11.2 km per second? Wow, that's more than a 10k a second. Nontheless, I'll bet that the Rangers would still sign the outfielder with no glove, 150 k's a year, but 40 hr's a year.

• 1 decade ago

If it is thrown straight upwards it will escape earth's gravity and travel for all time into space.

• How do you think about the answers? You can sign in to vote the answer.
• eric l
Lv 6
1 decade ago

Sooner or later it will hit the ground. It depends on what angle the ball is thrown as to when it hit the ground.

• Swamy
Lv 7
1 decade ago

It may escape the earth's gravitational system and go out into the solar system. What you mentioned is the 1st escape velocity of earth. The second escape velocity will take it out of the solar system.

• 1 decade ago

we have to know the weight of the ball and also if the ball will be thrown in a veritcal or horizantal to but in our calculats the gravity of the ground

• 1 decade ago

It will hit something

Still have questions? Get your answers by asking now.