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Q: How many feet do you signal when changing direction?
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Drivers require to signal of change a direction of direction for at least...?

Drivers require to signal of change a direction of direction for at least how many feet?


Why does a curve on a distance-time graph indicate acceleration?

The slope of a distance time graph is a measure of the rate of change in the distance of the object from a fixed reference point along the radial direction. If there were no acceleration in that direction then the radial velocity would be the same so that the graph would be a straight line. However, a curve indicates not only the the distance is changing with time, but that the rate of change is also changing. That is, the radial velocity is changing and that is indicative of radial acceleration.The word "radial" appear many times in the above paragraph. This is to emphasise that distance time graphs look only at the motion of an object in the direction towards or away from the reference point. Any motion is a transverse direction is ignored. Thus, a line with a constant gradient (slope) does not indicate that there is no acceleration but that any acceleration is in the direction at right angles to the reference direction.


How many feet of wire is in a slinky?

how many feet of wire is in a slinky? 80 feet


Is calories a scalar or a vector quantity?

well, by definition vector is something that has both direction and magnitude, in this case weight is only countable when gravity exists, and of course gravity has direction direction for vector doesnt have to be like north, south or within the plane because vectors are free and can be moved anywhere without changing its magnitude.


What is meant by significant figure of a measurement?

The numbers you know rather than guess at. (You know that you're x feet Y inches tall ... but how many Z 64th of an inch? You try to measure that but it seems to keep changing).