Why is it so hard to graduate?

The difference between a red shift and a blue shift has to do with wavelength frequency. t or f

Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.

Suppose a soccer ball is kicked from the ground at an angle 20.0º above the horizontal at 8.00 m/s. the y-velocity is determined to be 2.74 m/s. how long will the ball be in the air? assume the ball lands at the same height at which it was kicked.