Question

A ball falls from a shelf. Assuming there is no friction, why is the conservation of mechanical energy independent of mass?
Mass is eliminated when equating gravitational potential energy with kinetic energy.

The mass of the ball is insignificant compared with the mass of Earth.

Mass is eliminated when equating elastic potential energy with kinetic energy.***

The displacement of the ball is insignificant compared with Earth's size.

Answer 1

Mass is eliminated when equating gravitational potential energy with kinetic energy.
Yes, (1/2) m v^2 = m g h

Answer 2

Mass is eliminated when equating potential energy with kinetic energy.

Answer 3

1. Ball A was carried to the top of a hill in a straight line……
~C.Both balls have equal potential energy.
A swimmer jumps from a diving board into a pool. What would a graph of the…..
~B. Potential energy would decrease, while total mechanical energy would remain constant.
3. A student wants to design an experiment to study the transformation….
~ C. A slide
4. A ball from a shelf. Assuming there is no…….
~A. Mass is eliminated when equating potential energy with kinetic energy.
5. A marble is attached to a compressed horizontal spring….
~1/2mv^2=1/2kx^2

Answer 4

coconut is mi idol is 100% correct except in question 4 there are two answers that are the same but one is elastic potential energy and the other is gravitational potential energy and you need to choose the one that says gravitational energy.

Answer 5

Coconut Is Mi Idol is correct but Anonymous is also correct with the fact you need to choose gravitational potential energy! Thanks for helping me check my answers guys! :)

Answer 6

1. Both balls have equal potential energy.

2. Potential energy would decrease, while total mechanical energy would remain constant.

3. a slide

4. Mass is eliminated when equating gravitational potential energy with kinetic energy.

5. 1/2mv^2 = 1/2kx^2