Answers:
1) Time it takes to travel to the moon
Velocity
is defined as:

Where:
is the average distance from Earth to the Moon
is the velocity of the spacecraft
the time
Isolating
:


This is the time in hours
2) Time in days
A day is equivalent to 24 hours:

Hence:

This is the time in days
3) Time in months
A month is equivalent to 30.4 days:

Hence:

This is the time in months
As we said to the two people name A and the single person nameB.as every person make an acceleration 60ms2.so group A has more acceleration then group B. because in A there are two person so we add 60+60=120ms2. so group A can produce 120ms2 while groupB can produce 60ms2. i hope it will help you.
(a) Frequency of sound wave is inversely proportional to string length.
(b) Pitch of a sound depends on the frequency while loudness depends on the amplitude of sound.
<h3>
Relationship between string length and frequency</h3>
The relationship between string length and frequency is given as;
λ = 2L
where;
- λ is wavelength
- L is length of the string
v = fλ
f = v/λ
f = v/2L
Thus, frequency of sound wave is inversely proportional to string length.
<h3>Relationship between pitch and loudness of sound</h3>
The pitch of a sound depends on the frequency while loudness of a sound depends on the amplitude of sound waves.
Learn more about pitch and loudness here: brainly.com/question/61859
Answer:

Explanation:
F = Force = 
m = Mass of proton = 
t = Time taken = 
Acceleration is given by


The velocity of the proton is 
Answer:
the action of measuring something.