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Mechanical Energy and Its Principles

Mechanical Energy and Its Principles

Assessment

Interactive Video

Physics, Science, Mathematics

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

This video tutorial introduces mechanical energy, which is the sum of kinetic and potential energy. It explains the formulas for calculating kinetic and potential energy, using examples like a roller-coaster and a weightlifter to illustrate energy conversion and input. The video concludes with a discussion on the conservation of mechanical energy and encourages further practice.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is mechanical energy a combination of?

Sound and light energy

Nuclear and electrical energy

Kinetic and potential energy

Thermal and chemical energy

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula represents kinetic energy?

E = mc^2

E = mgh

E = 1/2 mv^2

E = Fd

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What does the symbol 'g' represent in the potential energy formula?

Gravitational force

Gravitational acceleration

Gravitational potential

Gravitational mass

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How is total mechanical energy calculated?

Product of potential and kinetic energy

Difference between potential and kinetic energy

Sum of thermal and kinetic energy

Sum of potential and kinetic energy

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to mechanical energy in a frictionless roller-coaster?

It is lost as heat

It is conserved

It is converted to sound energy

It increases over time

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

At the top of a roller-coaster, what type of energy is at its maximum?

Kinetic energy

Thermal energy

Chemical energy

Gravitational potential energy

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the weightlifter example, what is the velocity of the barbell at the highest point?

10 m/s

0 m/s

5 m/s

2.5 m/s

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