CH. 4 Work and Energy

Factors affecting kinetic energy

• mass only

• work only

• mass and velocity

• work and velocity

A car has a mass of 960 kg when traveling at a speed of 30m/s. What is its KE?

• a. 14,400 J

• b. 1600 J

• c. 432000 J

• d. 864,000 J

Tags

NGSS.HS-PS3-1

At which position does the pendulum bob have the

maximum amount of kinetic energy?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-PS3-1

NGSS.HS-PS3-2

At which two positions does the pendulum bob have the same amount of potential energy?

• 1

• 2

• 3

• 4

Tags

NGSS.MS-PS3-2

Which of the following scenarios shows no work done?

• A boy climbing up the hill.

• A woman pushing a trolley along a slope.

• A lady carries her handbag and walks 30 m along the corridor.

Where would this tossed baseball have the least amount of kinetic energy?

• point W

• point X

• point y

• point z

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

energy is stored energy due to position.

• Kinetic

• Potential

• Chemical

• Magnetic

Energy stored in chemical bonds is called .

• elastic potential energy

• chemical potential energy

• kinetic energy

• none of these

Tags

NGSS.HS-PS1-4

Anything that can fall to earth has stored energy called .

• elastic potential energy

• elastic potential energy

• kinetic energy

• gravitational potential energy

Tags

NGSS.MS-PS2-4

The unit of power is the .

• joule

• MA

• watt

• second