Anet force of 50 n is applied to a 10 kg cart that is already moving at 3 m/s. the final velocity of the cart was 8 m/s. for how long was the force applied
answer: atomic mass- this is the weighted average of all of the isotopes of an element.
the carpet is more likely to accumulate excess electric charge (static electricity) over time when there is no good way for it discharge. the dry air, as was said, insulates the carpet and makes it prone to such accumulation. this is less the case with humid air that allows the carpet to continuously discharge a portion of its electric charge over time and thus spares us--the walkers--a minor shock.
once the ball is thrown the only forces acting on it would gravity and air resistance. typically air resistance has small enough impact on the object that it can be ignored in introductory science classes. so let's go with that just gravity is acting on the object. gravity only acts in the vertical direction and causes object to accelerate downward. you said that the ball was thrown horizontally so gravity will begin to pull it down as soon as it is released, therefore making the height that it was thrown from the maximum height of it's path. the horizontal velocity does not effect vertical position.