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Work and Energy Concepts Flashcard

Work and Energy Concepts Flashcard

Assessment

Flashcard

Physics

12th Grade

Practice Problem

Hard

Created by

Wayground Content

FREE Resource

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15 questions

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1.

FLASHCARD QUESTION

Front

What is Kinetic Energy?

Back

Kinetic Energy (KE) is the energy possessed by an object due to its motion, calculated using the formula: KE = \frac{1}{2}mv^2, where m is mass and v is velocity.

2.

FLASHCARD QUESTION

Front

Calculate the Kinetic Energy of a 5 kg object moving at 3 m/s.

Back

KE = \frac{1}{2} \times 5 \times (3)^2 = 22.5 J.

3.

FLASHCARD QUESTION

Front

What is Gravitational Potential Energy?

Back

Gravitational Potential Energy (PE) is the energy an object possesses due to its position in a gravitational field, calculated using the formula: PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

4.

FLASHCARD QUESTION

Front

Calculate the Gravitational Potential Energy of a 2 kg object raised to a height of 10 m (g = 9.8 m/s²).

Back

PE = 2 \times 9.8 \times 10 = 196 J.

5.

FLASHCARD QUESTION

Front

What is the definition of Work in physics?

Back

Work is defined as the product of the force applied to an object and the distance over which that force is applied in the direction of the force. It is calculated as: W = Fd, where W is work, F is force, and d is distance.

6.

FLASHCARD QUESTION

Front

When is work done by a force?

Back

Work is done when the force is applied in the direction of the motion of the object. Specifically, work is done only when the force is parallel to the direction of motion.

7.

FLASHCARD QUESTION

Front

Calculate the work done by a force of 15 N acting over a distance of 2 m in a direction perpendicular to the force.

Back

W = Fd \cos(90°) = 15 \times 2 \times 0 = 0 J.

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