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Power and Force in Physics

Power and Force in Physics

Assessment

Interactive Video

Physics

9th - 10th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial covers the concept of power in physics, explaining it as the rate at which work is done or energy is used. It introduces the formula for power, P = W/T, and discusses the units of power, emphasizing the distinction between watts and joules per second. The tutorial provides examples to illustrate power calculations, including scenarios involving two people, a box, and an elevator. It also covers formula substitutions and the importance of understanding units in power calculations.

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10 questions

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1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the primary focus of the concept of power in physics?

The rate at which work is done

The total work done

The force applied over time

The amount of energy used

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula correctly represents power?

P = F / T

P = W * T

P = F * d

P = W / T

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the unit of power?

Meter

Joule

Watt

Newton

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How can power be expressed when considering force and velocity?

P = V / F

P = F / V

P = F * V

P = F * d

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the box example, what is the displacement used to calculate power?

10 meters

6 meters

20 meters

75 meters

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the force applied to the box in the example problem?

300 Newtons

200 Newtons

100 Newtons

400 Newtons

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In the elevator example, what is the mass of the elevator?

500 kg

750 kg

1000 kg

1250 kg

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