Answer:
I answered Number 4 (Solids and Elasticity)
Explanation:
solids and elasticity
According to the definition of the force, It is defined as <u>the multiplication of the mass and acceleration</u> (or, the rate change of the quantity of motion)
where:
- F: is the force in Newtons (N)
- m: is the mass in kilograms (Kg)
- a: is the acceleration in
Then, in our problem
We will apply the equation:
2as = v² - u²
v = √(2as + u²)
v = √(2 x 4 x 400 + 13²)
v = 58 m/s
hope this helps
A
the unit used for measuring both work and energy is the joule