Extra Credit (Q2)

Which of the following is an example of chemical potential energy?

• A stretched rubber band

• A battery

• A moving car

• A rolling ball

What type of energy transformation occurs when a toaster is used?

• Electrical to thermal

• Chemical to electrical

• Mechanical to thermal

• Thermal to electrical

Which of the following best describes gravitational potential energy?

• Energy stored in chemical bonds

• Energy due to an object's position above the ground

• Energy due to an object's motion

• Energy stored in a compressed spring

Tags

NGSS.MS-PS3-2

If a ball is at the top of a hill, what type of energy does it primarily have?

• Kinetic energy

• Gravitational potential energy

• Elastic potential energy

• Chemical potential energy

Tags

NGSS.MS-PS3-2

What is the net force on an object if two forces of 5 N and 10 N act on it in opposite directions?

• 15 N

• 5 N

• 10 N

• 0 N

Tags

NGSS.3-PS2-1

Which of the following is an example of an unbalanced force?

• A book resting on a table

• A car accelerating

• A person standing still

• A ball rolling at constant speed

Tags

NGSS.MS-PS2-2

How do you calculate average speed?

A car travels 150 km in 3 hours. What is its average speed?

• 50 km/h

• 45 km/h

• 60 km/h

• 55 km/h

What does a horizontal line on a distance-time graph indicate?

• Constant speed

• Increasing speed

• Decreasing speed

• No movement

On a distance-time graph, what does a steeper slope indicate?

• Slower speed

• Faster speed

• Constant speed

• No speed