I can give you a search engine that could help you with all ir hw its called socratic it uses everything on the internet to search for answers it’s literally a search engine
Answer:
1 m/s^2
Explanation:
V = U + at
20 = 15 + a(5)
5a = 5
acceleration = <u>1 m/s^2</u>
Your answer for part a is correct. Using Newton's 3rd Law, the force on the rocket by the exhaust leaving the rocket is the same magnitude (opposite direction) as the downward force applied to the exhaust.
In part b the net force is the upward force from the exhaust thrust minus the downward force of gravity:

Then using the Second Law, we get for part c:

The force and acceleration are in the upward direction
<span>This is impossible to calculate without knowing the speed of each vehicle. </span>
Answer:
0.04 m
Explanation:
The harmonic is given by λ = 2L/n were L= length of guitar string = 1.75 m and n = harmonic = 78.
So, λ = 2L/n = λ = 2 × 1.75 m/78 = 0.044 m ≅ 0.04 m