Acceleration because it is at a rise in speed. The formula for acceleration is Speed/Time.
Assuming that’s a right triangle, in this case A^2 + C^2 = B^2 … (16)^2 + C^2 = (25)^2 … C = 19.2 N
Explanation:
A = Wavelength
The distance between two consecutive crest or trough is wavelength
B = Amplitude
The maximum distance covered by the particles of a wave
C = Rest postion/equilibrium
When there is no disturbance in the medium
D = Trough
It is the displacement in negative direction
E = Crest
It is the displacement in positive direction
(A) The relationship between the wavelength and frequency is given by :

There is an inverse relationship between wavelength and frequency.
(B) 
When the frequency is decreased, the wavelength of a wave increases.
Eletromagnetic waves that dont need medium to travel whereas mechanical waves need a medium for its transmission. electromagnetic waves can travel in vacuum whereas mechanical waves cant.
Answer:
Explanation:
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