Force and Motion

Force and Motion

Assessment

Flashcard

Physics

8th 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 Newton's Second Law of Motion?

Back

Newton's Second Law states that the acceleration of an object is directly proportional to the net force acting on it and inversely proportional to its mass. It can be expressed with the formula F = ma, where F is force, m is mass, and a is acceleration.

2.

FLASHCARD QUESTION

Front

What does Newton's Third Law of Motion state?

Back

Newton's Third Law states that for every action, there is an equal and opposite reaction. This means that forces always occur in pairs.

3.

FLASHCARD QUESTION

Front

What is inertia?

Back

Inertia is the tendency of an object to resist changes in its state of motion. The more mass an object has, the greater its inertia.

4.

FLASHCARD QUESTION

Front

How is weight different from mass?

Back

Weight is the force exerted by gravity on an object, while mass is the amount of matter in an object. Weight can change depending on the gravitational field, but mass remains constant.

5.

FLASHCARD QUESTION

Front

What is the formula to calculate weight?

Back

Weight (W) can be calculated using the formula W = mg, where m is mass and g is the acceleration due to gravity (approximately 9.81 m/s² on Earth).

6.

FLASHCARD QUESTION

Front

What is friction?

Back

Friction is a force that opposes the motion of an object. It occurs when two surfaces come into contact and can vary in strength depending on the surfaces involved.

7.

FLASHCARD QUESTION

Front

What factors affect the force of friction?

Back

The force of friction depends on the nature of the surfaces in contact and the normal force pressing them together.

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