Answer:
1min since there is no gravity on the moon so it will take time to drop on the moon.
Explanation:
Answer:
A) The wave that travels through the rail reaches the microphone first.
B) separation in time between the arrivals of the two pulses is 0.01539 seconds.
Explanation:
Detailed explanation and calculation is shown in the image below
As soon as you let go of it it is at its max speed because gravity is constantly pulling it down