This question involves the concepts of the law of conservation of energy and kinetic energy.
The girl's fastest speed is "3.7 m/s".
According to the law of conservation of energy, the girl will have the fastest speed at mean position, which will be calculated as follows:
Loss in Potential Energy = Gain in Kinetic Energy
where,
v = maximum speed = ?
g = acceleration due to gravity = 9.81 m/s²
Δh = change in height = 1.3 m - 0.6 m = 0.7 m
Therefore,
<u>v = 3.7 m/s</u>
<u></u>
Learn more about the Law of Conservation of Energy here:
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Weight = mass * gravity = 60 kg * 3.75 m/s² = 225 N
<span>Option D.</span>
A charged atom is called a(n) ion. It can be negative charge or positive.
34. The element would have 34 protons. Also 34 electrons.
Answer:
45.6 m at 
south of west
Explanation:
Let's take the north-south direction as y-direction (with south being positive) and east-west direction as x-direction (with west being positive). Therefore, the two components of Cody's motion are:
- 
(south)
- 
(west)
Since they are perpendicular, the magnitude of the net displacement can be calculated by using Pythagorean's theorem:
The direction instead can be measured as follows:
And given the convention we have used, this angle is measured as south of west.
