A ball is thrown horizontally from the top of a 50.5-m building and lands 104.8 m from the base of the building. Ignore air resistance. (Assume the ball is thrown in the x direction and upward to be in the y direction.)a. What must have been the initial horizontal component of the velocity? b. What is the vertical component of the velocity just before the ball hits the ground? c. What is the velocity (including both the horizontal and vertical components) of the ball just before it hits the ground?

What is hidden during a lunar eclipse? isn't the moon hidden?

An artificial satellite circles the earth in a circular orbit at a location where the acceleration due to gravity is 6.03 m/s^2. determine the orbital period of the satellite.

1point) a skydiver weighing 130 lb (including equipment) falls vertically downward from an altitude of 14,000 ft and opens the parachute after 20 s of free fall. assume that the force of air resistance, which is directed opposite to the velocity, is of magnitude 0.85|v|0.85|v| when the parachute is closed and is of magnitude 17|v|17|v| when the parachute is open, where the velocity vv is measured in ft/s. assume that acceleration due to gravity has magnitude 32 ft/s/s; remember that weight is the product of mass and gravitational acceleration. find the speed of the skydiver when the parachute opens. speed is 150.6121788 ft/s find the skydiver's height when the parachute opens. height is 2338.98591 ft find the limiting velocity vlvl after the parachute opens. (think about whether this should be positive or negative.) vl=vl= 7.647 ft/s