Because of the upward force pushing it up.
It is too strong to let gravity pull it down.
Two thing slow the balloon down. First, air friction opposes its upward movement. Second, as the balloon gets higher, the air around it gets less dense, so there's not as much force propelling the balloon upward.
yes it does
The downward force of gravity, and the upward buoyant force resulting from the low density air inside the balloon.
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The hot air inside the balloon expands, making the hot air balloon fly.
its effect increases as balloon moves upward
When the balloon is hot the density of the air in it decreases and hence the upward thrust on the balloon increases and the balloon moves up and viceversa.
Two thing slow the balloon down. First, air friction opposes its upward movement. Second, as the balloon gets higher, the air around it gets less dense, so there's not as much force propelling the balloon upward.
when you spontaneously fly upward.
i think it takes a long time for a hot air balloon to fly
The hot air inside the balloon expands, making the hot air balloon fly.
By using a heat burner, hte balloon pilot makes the air in the balloon lighter than normal air. Then the balloon moves upward and moves with the wind.
Born into Trouble as the Sparks Fly Upward was created on 2001-10-08.
if we keep a pumpkin inside a balloon the balloon will not fly and will burst
Yes, helium will help a balloon fly. Helium does not affect the direction that a balloon goes, but it will keep it in the air for quite some time.
Yes they were first to fly the first hot air balloon