What is potential energy?

Potential energy is the stored energy of an object due to its position or state, calculated as $$PE = mgh$$ , where h is height.

What is the law of conservation of energy?

The law states that energy cannot be created or destroyed, only transformed from one form to another.

What is work in physics?

Work is done when a force causes displacement, calculated as $$W = Fd$$ , where W is work, F is force, and d is displacement.

What is the formula for calculating mechanical advantage?

Mechanical advantage is calculated as the output force divided by the input force.

What is the difference between speed and velocity?

Speed is a scalar quantity (magnitude only), while velocity is a vector quantity (magnitude and direction).

What is acceleration?

Acceleration is the rate of change of velocity per unit of time, calculated as $$a = \frac{\Delta v}{t}$$ .

What is the formula for gravitational potential energy?

The formula is $$PE = mgh$$ , where PE is potential energy, m is mass, g is acceleration due to gravity, and h is height.

What is the principle of moments?

The principle states that for an object in equilibrium, the sum of clockwise moments about a pivot equals the sum of counterclockwise moments.

Science: Matter and Energy - Chapter 3 Test 2 Flashcards

Student preview

15 questions

Show all answers

1.

FLASHCARD QUESTION

Front

What is the unit of power?

Back

Watt (W) is the unit of power, defined as one joule per second.

2.

FLASHCARD QUESTION

Front

What formula is used to calculate the weight of an object?

Back

3.

FLASHCARD QUESTION

Front

What is the ideal mechanical advantage (IMA) of a ramp?

Back

The ideal mechanical advantage is calculated as the ratio of the length of the ramp to the height it raises an object.

4.

FLASHCARD QUESTION

Front

What formula is used to calculate speed?

Back

5.

FLASHCARD QUESTION

Front

What is speed in terms of distance and time?

Back

Speed is the distance covered per unit of time.

6.

FLASHCARD QUESTION

Front

What is the formula for calculating force?

Back

7.

FLASHCARD QUESTION

Front

What is kinetic energy?

Back

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