Acampus bird spots a member of an opposing football team in an amusement park. the football player is on a ride where he goes around at angular velocity w at distance r from the center. the bird flies in a horizontal circle above him. will a dropping the bird releases while flying directly above the person's head hit him? ignore air resistance.

Abatter hits the baseball a with an initial velocity of v0 = 110 ft/sec directly toward fielder b at an angle of 23° to the horizontal; the initial position of the ball is 2.2 ft above ground level. fielder b requires 0.44 sec to judge where the ball should be caught and begins moving to that position with constant speed. because of great experience, fielder b chooses his running speed so that he arrives at the “catch position” simultaneously with the baseball. the catch position is the field location at which the ball altitude is 8.4 ft. determine the velocity of the ball relative to the fielder at the instant the catch is made.

Abeam of electrons with of wavelength of 7.5 x 10-6 m is incident on a pair of narrow rectangular slits separated by 0.75 mm. the resulting interference pattern is projected onto a screen 10.0 m from the slits. what is the separation of the interference maxima in the resulting interference pattern?

What is the weight of a feather (mass = 0.0001 kg) that floats through earth's and the moon's atmospheres?