Afootball quarterback is moving straight backward at a speed of 2.11 m/s when he throws a pass to a player 21.1 m straight downfield. the ball is thrown at an angle of 28.3° relative to the ground and is caught at the same height as it is released. what is the initial velocity of the ball relative to the quarterback? (assume downfield to be in the +x-direction. enter the magnitude in m/s and the direction in degrees counterclockwise from the +x-axis.)

In the 1980's, congress authorized the u. s. department of energy to build the wipp facility in the chicuahuan desert in new mexico. what is the purpose of wipp?

Wavelength, frequency, and energy are related. what happens to a wave as it’s wavelength gets shorter?

Choose the most likely outcome of this scenario: jen decided to go bike riding without a helmet. while no one is around during her ride, she is thrown from her bike when her wheel goes into a pothole. she is not injured, but she is terrified to get back on her bike. what happens next? a. her physical health is affected even though she wasn't hurt. b. her mental and emotional health are affected because she is afraid to get back on her bike. c. her social health is affected because she is worried her friends saw the fall. d. her overall health is not affected at all by her fall.