can a bird flying in a running bus?

Question

a bus with out window is running at the speed of 40 KM/h,

if a bird is chasing the bus,

can it keep flying at the speed of 40km/h when she gets into the bus?

why the bird can not fly if she was in the bus before the bus start running?

um..............

ok, with or without window,

anyway , there is a hole the bird can fly in

Answer 1

Assuming the speed of the bird is faster than 40Km/h.

The bird does not have to keep flying at 40km/h once it is inside the bus. The reason is the drag / air resistance. When the bird is outside the bus, there is huge air resistance against it. Once it enter the bus, the air inside the bus can be very still. So the air resistance drop hugely and it dos not need to fly fast.

Whe the bird was in the bus before it start: Once the bus start, the bus also carries the bird to the speed of 40km/h. The bus gave the bird of the kinetic energy and momentum as it is standing inside the bus. The bus and the bird is same speed.

When the bird takes off inside the bus, the bus is only so long, therefore, it has no space to travel.

Answer 2

I'm just happy I do know a bird can fly inside of a moving bus. I've seen it happen.

Answer 3

If the bus is without a window, how does the bird get in?

Answer 4

it can not fly because the air inside the bus is moving at the same speed.

Answer 5

how does the bird get into the bus?

Answer 6

I'm going with Lady Wolfwood...what?

Answer 7

It's just like a fly.. yes, it can fly..

Answer 8

yes

Answer 9

things that make you go... Hhhmmmm........

Answer 10

What....?