Answer:

Given:
Initial velocity, u = 0 m/s
Final velocity, v = 34 m/s
Time interval, 
Solution:
Acceleration is the rate at which the velocity of an object changes.
Thus
Average acceleration, 

Resistance is where you try to stop something from happening or trying to stop something in general
Answer:
D
Explanation:
Because it is the principle of conservation of energy which is proved and verified
Answer:
(i) The wavelength is 0.985 m
(ii) The frequency of the wave is 36.84 Hz
Explanation:
Given;
mass of the string, m = 0.0133 kg
tensional force on the string, T = 8.89 N
length of the string, L = 1.97 m
Velocity of the wave is:

(i) The wavelength:
Fourth harmonic of a string with two nodes, the wavelength is given as,
L = 2λ
λ = L/2
λ = 1.97 / 2
λ = 0.985 m
(ii) Frequency of the wave is:
v = fλ
f = v / λ
f = 36.29 / 0.985
f = 36.84 Hz