A because it is a formula for h*2
Propose a unique explanation
The Doppler effect, is one effect on light which shows that it's source is moving
Answer:
The period of a wave is the time for a particle on a medium to make one complete vibrational cycle. Period, being a time, is measured in units of time such as seconds, hours, days or years. The period of orbit for the Earth around the Sun is approximately 365 days; it takes 365 days for the Earth to complete a cycle.
Answer:
Both cyclists have a displacement (vector) of 546.41 m
V(velocity) = 546.61 / 30 = 18.2 m/sec
Cyclist x travels 600 m / 30 = 20 m/sec average speed assuming 20 sec over each 200 m interval (total displacement of X = 600 m)
Cyclist Y travels 546.61 m / 30 = 18.2 m/s average speed