Answer:
Mechanical energy is the sum of kinetic and potential energy of a system
Answer:
is the mass of librarian.
Explanation:
Given:
- mass of the system,
- velocity of librarian relative to the ground,
- velocity of the cart relative to the ground,
N<u>ow using the principle of elastic collision:</u>
Net momentum of the system is zero.
is the mass of librarian.
A substance maintaining a uniform appearance throught is called homogeneous
Answer:
C
Explanation:
Diagram C is the correct answer, because the ball is at the point with the highest height relative to the ground, in this way all the kinetic energy has been transformed into potential energy.
We must remember that potential energy is defined as the product of mass by gravity by height
Ep = m*g*h
where:
m = mass [kg]
g = gravity acceleration [m/s²]
h = elevation [m]
So when we have a great value for h in the above equation, we will have a big value for potential energy.
A reference point would be something not on the ship which could be used to calculate distance traveled.
Answer: C.) A lighthouse on a nearby Island
