Phys 101 Lecture 17

Predict what will happen if the cans were removed. Which force would be the strongest?

• d

• n

• g

• f

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Normal force means it is

• average

• perpendicular

• plain

• stable

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What is the speed of an object moving 600m in 15 seconds?

• 4.1 m/s

• 40.m/s

• .41m/s

• 40.1 m/s

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There are 6 neutrons and 5 electrons pictured, how many protons are needed to stabilize the atom?

• 1

• 5

• 6

• 11

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What are the lines called that the electrons are connected to in the image?

• pathways

• orbitals

• atomic guards

• rings

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When your car climbs to the top of a roller coaster you are

• Gaining gravitational kinetic energy

• Losing gravitational kinetic energy

• Gaining gravitational potential energy

• Losing gravitational potential energy

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Magnets have the property to _________ some metallic materials.

• attract and pull

• repel and repeat

• multiply and divide

• attract and repel

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When working with magnets it's important to remember that like polarities

• repel each other

• attract each other

• match each other

• duplicate each other

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Using Newton's second law, determine the force if m= 80g and a= 6.3m/s?

• .54N

• 54N

• 50.4N

• 504N

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If F=ma what is m if F= 500N and a= 4.2 m/s?

• 109N

• 1091N

• 119N

• 19N

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