Is is possible for an object, which is moving in one direction, to reverse directions without ever stopping?

Question

For example, if a wheel is spinning, is it possible for the direction in which it is spinning to be reversed without ever stopping for a moment?

If so, how?

Is not, why?

Answer 1

No, it is impossible. To change directions by reversing it must stop, even if it is for a billionth of a millisecond or shorter.

Answer 2

An object could reverse direction by making a loop and therefore never stop. The formula for acceleration = F=ma would indicate that the velocity in a straight line can not reverse without going through zero.

I think the answer to your question is "no".

Answer 3

it is possible, but is very hard, and requires a lot of energy due to inertia. Inertia is the tendancy for all objects to keep going in the direction and velocity that it is going in. Because of this, a force would have to be able to accelerate the wheel the opposite direction and overcome its inertia.

Answer 4

The term "stop" is relative to perspective. If you where looking at the wheel, for instance, you could just turn it over, it would appear to be spinning the other way.

If you where on the wheel, it would have to "stop" to turn the other way.

Answer 5

Your'e honestly ideal. it is the speed at which the fly decelerates that causes it to be splattered. If the bus is transferring very quickly the deceleration occurs very quickly and the fly is a gonner. If the bus changed into vacationing at purely 2 miles in accordance to hour, the fly might want to likely survive. it is the same element that occurs to human beings at the same time as hit with information from a motor vehicle !

Answer 6

Sure-- if it rolls along a loop, when it gets to the top of the loop it will be going the opposite direction without having stopped.

Answer 7

No I agree with futurast-- it will mean infinite acceleration and therefore infinite force which is an impossibility!

Answer 8

mmmmmmmmmmmmmmm
i wonder