2006-10-01 03:45:16 · 21 answers · asked by GA K 1 in Science & Mathematics ➔ Physics
Relativity- it depends on which fixed point you are measuring the fly's velocity from, if the fixed point is the fly itself then thy fly is stationary.
2006-10-01 05:21:56 · answer #1 · answered by mick.tripp 3 · 0⤊ 0⤋
If you assume that the fly remains in the centre of the car while it is flying, the it is flying with an absolute velocity of 70 miles per hour. However relative to the car the fly has a relative velocity of 0 miles per hour.
The same principle applies to people on earth. If we stand still we say we have a speed of 0mph, however the earth is rotating around the sun rather fast, so we do actually have a speed. Just have to measure it relative to something.
2006-10-03 01:53:53 · answer #2 · answered by Derek T 2 · 0⤊ 0⤋
Relative to the inside of the car it's travelling at fly speed, relative to someone watching the car it's travelling at 70 mph ( plus a bit of fly speed )
2006-10-03 05:33:57 · answer #3 · answered by welsman1 2 · 0⤊ 0⤋
It is flying nearly 70 mph relative to the person outside the moving car, and nearly 1-2 mph relative to the person sitting inside the car
2006-10-01 04:56:14 · answer #4 · answered by Manpreet 1 · 0⤊ 0⤋
The fly's speed is only relative to the car it's in. Otherwise calculate the speed we are all travelling at round the sun.
93,000,000 miles X 3.141 / 365 / 24 MPH!
2006-10-01 04:30:47 · answer #5 · answered by Roy S 5 · 1⤊ 0⤋
It is impossible to say. Relative to the car? Slowly. Relative to the ground? About 70 MPH. Relative to the Sun? Many thousands of miles an hour. Relative to another galaxy? Millions of miles an hour.
2006-10-01 13:24:50 · answer #6 · answered by Mark L 3 · 0⤊ 0⤋
depends on how what you relate the speed to. The ground or the air surrounding the fly, is the fly flying forward och backwards in the car
2006-10-01 03:49:45 · answer #7 · answered by mfem.geo 2 · 2⤊ 0⤋
Obviously it is in a confined space so it is flying at whatever speed that a fly would move at say in your living room. I get enough splattered on the visor of my motorcycle helmet to know that they can't outfly a speeding motorcycle.
2006-10-01 05:07:45 · answer #8 · answered by frchrisfgn 2 · 0⤊ 0⤋
Depends on the direction of flight.
Assume the fly is going from the rear window to the front window at 3 MPH. It is traveling 73MPH relative to the ground.
The reverse would be 67MPH.
2006-10-01 03:54:29 · answer #9 · answered by Anonymous · 2⤊ 0⤋
70 miles per hour coz its the same as the car
2006-10-01 03:47:20 · answer #10 · answered by DEBS A 2 · 0⤊ 0⤋