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zhenek [66]
3 years ago
6

PLZ HELP!

Physics
2 answers:
MrMuchimi3 years ago
8 0

Answer:

The answer is ball D

Explanation:

because I said it was

Nastasia [14]3 years ago
3 0

Answer:

The answer is B.

Explanation:

<u>Because that's the one that's more-so higher up than the other soccer balls. This grants the ball to have higher potential energy than the rest.</u>

Quote:

<em>"Your body is as weak as your soul, so it is easy to separate the two."</em>

<em>- Akuma</em>

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Can an object have both kinetic energy and gravitational potential energy? Explain.
marin [14]
Energy flows with kinetic energy
8 0
2 years ago
How much work is required to lift a 2 kg mass to a height of 10 meters?
scoray [572]
Use the equation potential energy =m*g*h
m-mass,
g-gravitational acceleration,
h-height
Potential energy = 2*10*10
=200
kg {m}^{2}   {s}^{ - 2}
This is the unit of the energy
6 0
3 years ago
A railroad car with a mass of 30,000 kg is moving at 2.0 m/s when it runs into an at-rest freight car with an equal mass. The ca
11Alexandr11 [23.1K]
The total momentum of the system is preserved through the collision.

Note that momentum is
P = m*v
where m = mass
v = velocity.

Initial momentum:
P1 = (30000 kg)*(2 m/s) = 60000 (kg-m)/s for the moving car
P2 = 0 for the starionary car.

Final momentum:
P3 = (30000 + 30000)*v = 60000v (kg-m)/s

Because momentum is preserved,
P3 = P1 + P2
60000v = 60000
v = 1 m/s
The final velocity is 1 m/s.

Answer: 1.0 m/s
4 0
3 years ago
The sum of all forces acting on an object<br><br>Balance force<br><br>friction<br><br>net force
tatyana61 [14]
Net force if those the answer question
8 0
3 years ago
Read 2 more answers
Tracy makes a list of energy transformations that occur as an engine runs to power a car.
makvit [3.9K]

3. Chemical energy transforms into gravitational potential energy.

Explanation:

First of all, let's check the definition for each type of energy:

- Chemical energy is the energy stored in the chemical bonds inside compounds and substances

- Thermal energy is the energy due to the random motion of atoms/molecules (heat)

- Electrical energy is the energy related to the motion of electrical charges

- Gravitational potential energy is the energy of an object which is placed at some height above the ground

- Kinetic energy is the energy of an object in motion

Given this definition, we can check each energy transformation to see which one are really involved in the engine used to power the car:

1. Chemical energy transforms into thermal energy. --> YES. This one is present: in fact, the chemical energy contained in the fuel is converted inside the engine into heat (thermal energy)

2. Thermal energy transforms into electrical energy. --> YES. The heat (thermal energy) used in the engine is converted into electrical energy used to turn on the car.

3. Chemical energy transforms into gravitational potential energy. --> NO. There is no gravitational potential energy involved in this example, since the car runs on the ground.

4. Thermal energy transforms into kinetic energy. --> YES. The heat (thermal energy) used in the engine is converted into energy of motion of the car.

Therefore, Tracy should remove option 3) from her list.

3 0
3 years ago
Read 2 more answers
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