Answer:
Explanation:
Maximum vertical distance or height = h = 35.4 m
let's consider the initial speed at the top is zero.
As the roller coaster is coming from top to bottom there is the conversion of gravitational potential energy into kinetic energy. So we will consider the law of conservation of energy.
As in this case,
Loss in potential energy = Gain in Kinetic energy
mgh = 1/2mv²
mass will cancel out will mass.
gh = 1/2 v²
v = √2gh
v = √2×9.8×35.4
v =√693.84
v = 26.34 m/s
The rollar coaster will have the maximum speed of 26.34 m/s when it reaches the bottom if we ignore the frictional forces.
Answer:
The degradation of energy is the loss of useful energy: energy is conserved in changes, but tends to be transformed into thermal energy, which is a less usable form of energy.
Explanation:
Some forms of energy can be transformed into others. In these transformations, energy degrades, loses quality. In any transformation, part of the energy is converted into heat or heat energy.
Any type of energy can be completely transformed into heat; but, this cannot be completely transformed into another type of energy. It is said, then, that heat is a degraded form of energy. Are examples:
- The electrical energy, when going through a resistance.
- Chemical energy, in the combustion of some substances.
- Mechanical energy, by shock or friction.
Therefore, the Yield is defined as the ratio (in% percent) between the useful energy obtained and the energy contributed in a transformation.
R = ( useful energy / total energy) * 100
where R is the yield
Answer: 6067.5 N
Explanation:
Work = Change in Energy. To start, all of the energy is kinetic energy, so find the total KE using: KE = 1/2(m)(v^2). Plug in 1980 kg for m and 15.5 m/s for v and get KE = 237847.5 J.
Now, plug this in for work: Work = Force * Distance; so, divide work by distance to get 6067.5 N.
Answer:
D
Explanation:
The gravity is pushing the water downward so Wayne could go down but the water is pushing Wayne to go up which would make him float.