To solve this problem, it is necessary to use the concepts related to the Force given in Newton's second law as well as the use of the kinematic equations of movement description. For this case I specifically use the acceleration as a function of speed and time.
Finally, we will describe the calculation of stress, as the Force produced on unit area.
By definition we know that the Force can be expressed as
F= ma
Where,
m= mass
a = Acceleration
The acceleration described as a function of speed is given by
Where,
Change in velocity
Change in time
The expression to find the stress can be defined as
Where,
F = Force
A = Cross-sectional Area
Our values are given as
Replacing at the values we have that the acceleration is
Therefore the force expected is
Finally the stress would be
Therefore the compressional stress that the arm withstands during the crash is 49.97Mpa
So it can read all the wave correctly
The resultant velocity as shown from the attached solution ≈ 17.45 m/s
I hope the attached solution helps.
The displacement ........................
This reaction would be classified as a double displacement or replacement reaction. This is because the atoms/groups of atoms within each compound are swapped or have broken bonds and reformed with other atoms/groups, where each of them has been replaced with their counter metal or nonmetal in the equation.