Physics Concepts in Work and Energy

Physics Concepts in Work and Energy

Assessment

Interactive Video

Physics, Mathematics, Science

9th - 12th Grade

Practice Problem

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial covers solutions to physics problems 24 to 26, focusing on work, power, and energy. Problem 24 involves calculating the sliding distance of a car using the work-energy theorem. Problem 25 explores two methods to find the mass of a block lifted by a rope, again using the work-energy theorem. Problem 26 determines the speed of a book at impact when dropped, applying the conservation of energy principle. Each problem is explained step-by-step, highlighting key physics concepts and calculations.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial velocity of the car before the brakes are applied?

20 m/s

30 m/s

35 m/s

25 m/s

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which theorem is used to calculate the distance the car slides?

Work-Energy Theorem

Conservation of Momentum

Newton's Second Law

Conservation of Mass

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the weight of the car in the problem?

15,000 N

10,000 N

14,700 N

12,500 N

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How much work is done in lifting the block?

2.0 Joules

1.5 Joules

1.0 Joules

0.5 Joules

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the mass of the block when 1 Joule of work is done to lift it?

0.10 kg

0.12 kg

0.15 kg

0.20 kg

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which method is NOT used to solve the block lifting problem?

Both methods are used

Conservation of Momentum

Work-Energy Theorem

Direct work calculation

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the height from which the physics book is dropped?

4.50 m

4.00 m

5.00 m

3.50 m

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