Urgent-About reference frames!!! Hi guy's. I thought about this for quite a while but could not convince myself to believe it. I may be wrong somewhere but still any help would be greatly appreciated. The question: Now the earth rotates at a speed of 7.29*e^-5 rad/sec.,so that any point on it's surface moves a linear distance of 465m approx. in 1sec.(considering tangential velocity of earth). Now that suppose we are in a helicopter which is in air above the ground (earth's atmosphere) and the helicopter has zero absolute velocity(indirectly is it inertial frame of reference). Now, if we see earth rotating from the helicopter we would see any point on it(earth) covers a distance of 465 m in 1sec.(i made the helicopter stationary while the earth is still moving) So we do not need the helicopter to travel here n there but to stand still in air while we reach our destination only because of the earth's rotation. This seems contradictory to our real world experience?? This means that if we jump in air for 1sec. then by that time earth would have moved by 465m. but still we land on the same spot instead of landing 465m sideways??? rather than going 465m left or right.