TCI Forces & Energy Lesson 2 Forces In Interactions

Isaac Newton was born in what year?

• 1500

• 1599

• 1607

• 1643

Which of the following is an “old” idea that Newton was taught while he was in school

• The planets revolve around the sun.

• Earth is the center of the solar system.

• Math that describes the motion of the planets.

• Gravity is a force that acts on objects in a solar system.

Newton published several books that are collectively known as

• Principia

• Mathematica

• Newton’s Laws

• Natural Philosophy

The four scientific laws that Newton developed related to

• gravity and speed

• gravity and magnetism

• acceleration and the planets

• gravity and forces and motion

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How did Newton develop his scientific laws?

• He studied the work of Greek philosophers.

• He created new ideas based on a few lucky guesses.

• He wrote them all down after dreaming about them.

• He combined the ideas and observations of many other scientists.

In science, force refers to

• a moving object.

• the way objects interact.

• a push or pull on an object.

• description of an objects movement.

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When do forces always occur?

• when two objects interact

• when two objects are in motion

• when one object is larger than another

• when two objects are of the same size

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Forces are described using

• speed and direction.

• motion and distance.

• strength and direction.

• strength and distance.

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Which unit is used to measure the strength of forces?

• kilowatt (kW)

• megajoule (MJ)

• newton (N)

• pascal (Pa)

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Different strengths of forces can be modeled using

• arrows of different lengths.

• scales that measure different forces.

• a table of different numerical values.

• a graph of different numerical values.

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