Understanding Work: Positive, Negative, and Zero

Understanding Work: Positive, Negative, and Zero

Assessment

Interactive Video

Physics, Science

8th - 10th Grade

Practice Problem

Medium

Created by

Sophia Harris

Used 1+ times

FREE Resource

The video tutorial explains three types of work: positive, negative, and zero work. Positive work occurs when force and displacement are in the same direction, resulting in a positive value. Negative work happens when force and displacement are in opposite directions, leading to a negative value. Zero work is when force and displacement are perpendicular, or when there is no force or displacement. Examples are provided for each type to illustrate the concepts.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the three types of work discussed in the video?

Positive, Negative, and Zero

Kinetic, Potential, and Thermal

Mechanical, Electrical, and Chemical

Static, Dynamic, and Rotational

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When is work considered positive?

When there is no displacement

When force and displacement are in the same direction

When force and displacement are in opposite directions

When force is perpendicular to displacement

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the example of a man pushing a trolley, why is the work done positive?

Because the trolley is stationary

Because the force is greater than the displacement

Because both force and displacement are in the forward direction

Because the force is applied at an angle

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the angle between force and displacement in positive work?

45 degrees

90 degrees

0 degrees

180 degrees

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What characterizes negative work?

Force and displacement are in the same direction

Force and displacement are perpendicular

Force and displacement are in opposite directions

There is no force applied

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the context of frictional force, why is the work done negative?

Because there is no displacement

Because frictional force is in the opposite direction to displacement

Because frictional force is in the same direction as displacement

Because frictional force is greater than the applied force

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the angle between force and displacement in negative work?

0 degrees

45 degrees

90 degrees

180 degrees

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