Kinetic Energy and Work Concepts

Kinetic Energy and Work Concepts

Assessment

Interactive Video

Physics, Mathematics, Science

9th - 10th Grade

Hard

Created by

Patricia Brown

FREE Resource

The video tutorial explains kinetic energy, a type of mechanical energy related to an object's motion. It discusses the work-energy theorem, which states that work done on an object is equal to the change in its kinetic energy. The tutorial provides the formula for kinetic energy, 1/2 mv^2, and demonstrates how to calculate it using an example of a truck moving at different velocities. The change in kinetic energy when the truck accelerates is calculated to determine the work done.

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is kinetic energy?

Energy stored in an object due to its position

Energy an object has because of its motion

Energy released during a chemical reaction

Energy an object has due to its temperature

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

According to the work-energy theorem, what is the relationship between work and energy?

Work is less than energy

Work is unrelated to energy

Work is equal to the change in energy

Work is always greater than energy

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which formula represents kinetic energy?

1/2 mass times velocity squared

Mass times acceleration

Force times distance

1/2 mass times acceleration squared

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you calculate the change in kinetic energy?

By determining the object's mass change

By calculating the difference in kinetic energy at two points

By measuring the object's temperature change

By finding the difference in potential energy

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the kinetic energy of a 1500 kg truck moving at 8 m/s?

3.6 * 10^4 Joules

6.0 * 10^4 Joules

5.2 * 10^4 Joules

4.8 * 10^4 Joules

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

If a truck accelerates from 8 m/s to 12 m/s, what is the work done?

10.0 * 10^4 Joules

4.0 * 10^4 Joules

6.0 * 10^4 Joules

8.0 * 10^4 Joules

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the initial kinetic energy of the truck at 8 m/s?

7.8 * 10^4 Joules

5.8 * 10^4 Joules

4.8 * 10^4 Joules

6.8 * 10^4 Joules

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