A player kicks a football from ground level with an initial velocity of 27.0 m/s, 30.0° above the horizontal, as shown in the figure. Assume that forces from the air on the ball are negligible.
Find the ball's hang time (time of flight).

More solar radiation is absorbed by earth’s surface than by

Explain why electric current cannot exist if a current doesn't have a voltage source.

This energy transformation diagram represents the energy of a skateboarder moving along a half-pipe. as she skates toward the top of the half-pipe, her original kinetic energy is converted to potential energy and friction. how much of the energy is potential?