Forces and Motion

Forces and Motion

By Ma. Nganmaya

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​Background​

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​Sir Isaac Newton (1643-1727) an English scientist and mathematician famous for his discovery of the law of gravity also discovered the three laws of motion. He published them in his book Philosophiae Naturalis Principia Mathematica (mathematic principles of natural philosophy) in 1687.  Today these laws are known as Newton’s Laws of Motion and describe the motion of all objects on the scale we experience in our everyday lives.

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Multiple Choice

Isaac Newton was a _____________________.

• mathematician.

• physicist.

• astronomer.

• All of these

Multiple Choice

Legend has it that when Newton saw an apple fall from a tree, he began to think about _____________________.

• the planets.

• the best way to make apple pie.

• the force that would later be called gravity.

• why apples are red.

Multiple Choice

 

Most historians believe that Newton invented __________________.

• fig Newtons.

• calculus.

• apple pie.

• the moon.

Calculus

•Light is composed of rainbow colors

•Reflecting Telescope

•Laws of Motion

•Theory of Gravitation

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​Newton’s Contributions

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Multiple Choice

The pressure which is exerted by air around us is known as

• force

• muscular force

• atmospheric pressure

• friction

Multiple Choice

Force acting on per unit area is called

• non contact force

• pressure

• contact force

• force

Multiple Choice

A _______ exerted by an object on another is called force

• Push or pull

• Pressure

• Contact or non contact force

• Magnitude

Multiple Choice

 

Force changes the

• Motion of body

• Shape of body

• Speed of body

• All of these

Multiple Choice

When two forces act in opposite directions, then net force acting is the

• Sum of two forces

• Both of these

• Difference between two forces

• None of these

Multiple Choice

turning the pages of a book

• Push

• Pull

• both

Multiple Choice

opening a bag of chips with your hands

• push

• both

• pull

Multiple Choice

wearing pants

• both

• pull 

• push

Multiple Choice

throwing a ball

• both

• pull

• push

Multiple Choice

What is Newton's First Law known as? The Law of

• Friction

• Inertia

• Mass

• Gravity

Multiple Choice

What is inertia?

• the force that opposes motion

• an object's tendency to stay in motion or to stay at rest

• the force of attraction between 2 objects

• a change in an object's speed and/or direction

Multiple Choice

Which has more Inertia? (and more force to move) 

• Truck

• Ant

Multiple Choice

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.

• change its momentum.

• eventually come to a stop.

• accelerate.

Multiple Choice

The inertia of an object depends on its

• mass

• velocity

• speed

• direction