AP Physics 1 Flashcards: Power

What this deck covers

This deck focuses on Power, giving you a quick way to review the definitions, rules, and examples that matter most for AP Physics 1.

How to use these flashcards

Work through these flashcards in short sessions. Try to answer each prompt before flipping the card, then revisit any cards you miss until the explanation feels automatic.

Flashcard 1: Which physical quantity is the rate of doing work?

Answer: Power. Power measures how quickly work is performed.

Flashcard 2: Which physical quantity is the rate of doing work?

Answer: Power. Power measures how quickly work is performed.

Flashcard 3: Identify the unit equivalent to one watt in terms of basic SI units.

Answer: 1 W = 1 J/s. One watt equals one joule of energy per second.

Flashcard 4: State the formula for power in terms of energy and time.

Answer: $P = \frac{E}{t}$. Energy transferred per unit time defines power.

Flashcard 5: What is the formula for mechanical power in terms of work and time?

Answer: $P = \frac{W}{t}$. Work per unit time defines mechanical power.

Flashcard 6: State the unit of power in the International System of Units (SI).

Answer: Watt (W). Named after James Watt, equal to one joule per second.

Flashcard 7: Identify the formula for power in rotational motion.

Answer: $P = \tau \times \frac{d\theta}{dt}$. Torque times instantaneous angular velocity.

Flashcard 8: What is the equivalent of 1 horsepower in watts?

Answer: 746 W. Historical unit conversion for mechanical power.

Flashcard 9: What is the formula for power in terms of force and velocity?

Answer: $P = F \times v$. Force dot product with velocity gives instantaneous power.

Flashcard 10: What is the formula for instantaneous power using force and velocity vectors?

Answer: $P = \textbf{F} \bullet \textbf{v}$. Dot product accounts for force direction relative to velocity.

Flashcard 11: What is the formula for power in terms of mass, gravity, height, and time?

Answer: $P = \frac{mgh}{t}$. Power to lift mass against gravity over time.

Flashcard 12: What is the formula for power using force, displacement, and time?

Answer: $P = \frac{F \times d}{t}$. Force times displacement per unit time equals power.

Flashcard 13: What is the formula for power in terms of energy change and time?

Answer: $P = \frac{\triangle E}{t}$. Change in energy over time interval.

Flashcard 14: What is the definition of power in physics?

Answer: Rate of doing work or transferring energy. Fundamental definition in terms of work and energy.

Flashcard 15: What is the formula for power in terms of torque and angular velocity?

Answer: $P = \tau \times \frac{d\theta}{dt}$. Rotational power equals torque times angular velocity.

Flashcard 16: What is the formula for power in terms of mass, gravity, height, and time?

Answer: $P = \frac{mgh}{t}$. Power to lift mass against gravity over time.

Flashcard 17: Identify the formula for power in rotational motion.

Answer: $P = \tau \times \frac{d\theta}{dt}$. Torque times instantaneous angular velocity.

Flashcard 18: What is the formula for power in terms of force and velocity?

Answer: $P = F \times v$. Force dot product with velocity gives instantaneous power.

Flashcard 19: What is the equivalent of 1 horsepower in watts?

Answer: 746 W. Historical unit conversion for mechanical power.

Flashcard 20: State the unit of power in the International System of Units (SI).

Answer: Watt (W). Named after James Watt, equal to one joule per second.

Flashcard 21: What is the formula for power in terms of torque and angular velocity?

Answer: $P = \tau \times \frac{d\theta}{dt}$. Rotational power equals torque times angular velocity.

Flashcard 22: What is the formula for instantaneous power using force and velocity vectors?

Answer: $P = \textbf{F} \bullet \textbf{v}$. Dot product accounts for force direction relative to velocity.

Flashcard 23: State the formula for power in terms of energy and time.

Answer: $P = \frac{E}{t}$. Energy transferred per unit time defines power.

Flashcard 24: Identify the unit equivalent to one watt in terms of basic SI units.

Answer: 1 W = 1 J/s. One watt equals one joule of energy per second.