Energy dissipation

Work is product of time and

• Energy

• Power

• Force

• Distance

To lift a 5 kg mass to a certain height, amount of energy spent is 250 J. The mass was raised to a height of

• 15 m

• 5 m

• 10 m

• 7.5 m

A weight lifter lifts 240 kg from the ground to a height of 2.5 m in 3 seconds, his power is

• 1960 W

• 19.6 W

• 1.96 W

• 196 W

What kind of energy does this device use?

• Chemical
• Electrical
• Thermal
• Chemical

Tags

NGSS.MS-PS1-6

The Law of Conservation of Energy states:

• Energy can created or destroyed but not transformed 
• Energy cannot be created or destroyed, it can only transformed
• Energy can't be created, destroyed or transformed

Changes in energy stores in a torch lamp

• Chemical energy store in the battery

• Sound energy

• Electrical energy

• Light and thermal energy

At which point(s) on the roller coaster is the gravitational potential energy at its maximum?

• A
• B
• C
• D

Tags

NGSS.MS-PS3-2

What type of energy is in this picture?

• Kinetic
• Potential
• Chemical
• Sound

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5

On a roller coaster, where is maximum potential energy?

• At the bottom of a big hill
• When going around a corner
• When going upside down
• At the top of a big hill

Tags

NGSS.MS-PS3-2

What force ultimately slows the roller coaster to a stop?

• Applied
• Normal
• Friction
• Magnetic

Tags

NGSS.MS-PS2-2