Ahot-air balloonist, rising vertically with a constant velocity of magnitude 5.00 m/s, releases a sandbag at an instant when the balloon is 40.0 m above the ground. after the sandbag is released, it is in free fall. find the position of the sandbag at 0.250 s after its release.

You notice the birds sitting on the electrical wires which of the following explain why the birds don't get shocked

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.

Why do some scientists and archeologists think that volta was not the first person to build a battery