Answer:
B, D,E,F
Explanation:
Situations from the list in which mechanical energy is conserved.
Whenever there is friction there is always some loss of energy in the process and hence energy cannot be conserved.
- The Moon orbiting the Earth (Total energy is remains the same)
- An ice skater gliding along the ice
( smooth surface no friction loss)
- A ball sliding down a friction less hill ( again friction less process)
- A child swinging on a friction less swing, ignoring air resistance
I think its a......or b :3 srry if i didnt say one answer but at least i broke it down into two answers right?
Answer:
0.17547 m
Explanation:
m = Mass of block = 
v = Velocity of block = 10.8 m/s
k = Spring constant = 125 N/m
A = Amplitude
The kinetic energy of the system is conserved
The amplitude of the resulting simple harmonic motion is 0.17547 m
Heya!!
For calculate aceleration, lets applicate second law of Newton:
<u>Δ Being Δ</u>
F = Force = 78,3 N
m = Mass = 24,5 kg
a = Aceleration = ?
⇒ Let's replace according the formula and clear "a":
⇒ Resolving
Result:
The aceleration is <u>3,19 meters per second squared (m/s²)</u>
Good Luck!!
When talking about orbits, it would have to be a mixture of both A. and B. since Newton's first law, gravity plays a huge part in an orbit. However, the universal gravitation law also tells us the relationship between two massive objects in orbit. But to choose only one, it would have to be B. Newton's first law
