A golf ball leaves a golf club with an initial velocity of 40.0 meters per second at an angle of 40° with the horizontal. v = 40.0 m/s
40.
What is the total horizontal distance traveled by the golf ball during the first 2.50 seconds of its flight?
А
40.0 m
A
B
64.3 m
С
76.6 m
D
100 m

Amichelson interferometer operating at a 600 nm wavelength has a 3.02-cm-long glass cell in one arm. to begin, the air is pumped out of the cell and mirror m2 is adjusted to produce a bright spot at the center of the interference pattern. then a valve is opened and air is slowly admitted into the cell. the index of refraction of air at 1.00 atm pressure is 1.00028.how many bright-dark-bright fringe shifts are observed as the cell fills with air?