7.1 Newton’s laws of motion.

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1.     Newton’s first law is also known as the law of what?

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2.     Complete the paragraph below.Newton’s first law says that an object that is not moving, or is at __________________________, will stay at __________________________ and an object that is moving will keep moving with constant _______________________, which means at the same ___________________and in the same __________________________, unless __________________________ acts on that object.

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3.     What is inertia?  

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4. What property of an object determines how much inertia it has?

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5. Newton’s second law of motion is also known as the law of?

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6.     Newton’s second law says that when an __________________________

force is applied to a __________________________, it causes it to __________________________.

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7. The greater the force that is applied, the __________________________the acceleration.

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8.     The smaller the force that is applied, the __________________________the acceleration.

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9.     If the same force is applied to an object with a large mass, it will have a __________________ acceleration.

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10.     If the same force is applied to an object with a small mass, it will have a __________________________ acceleration.

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11.     The equation used to solve problems involving Newton’s second law is F = ma.

 

a.     What does each variable represent?

 

F =

m =

a =

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b.     What unit of measurement is used with each variable?

 

F =

m =

a =

 

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12.     Newton’s third law of motion is also known as the law of ____________.

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13.    Newton’s third law says that whenever there is an _________ force, there is also a _________ force that is ______ in size and acts in the _________ direction.

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14.Newton’s third law states that forces must always occur in _____.

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15. 1.     Label each of the following images/descriptions as being examples of first, second or third law, or combinations of these. Then explain your answer.

 

A moving object

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15.2   Label each of the following images/descriptions as being examples of first, second or third law, or combinations of these. Then explain your answer.

 

A hammer hitting a nail

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15. 3.     Label each of the following images/descriptions as being examples of first, second or third law, or combinations of these. Then explain your answer.

 

Hitting a stationary object in a car accident. Passengers keep moving forward

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15. 4.     Label each of the following images/descriptions as being examples of first, second or third law, or combinations of these. Then explain your answer.

 

A cannonball being fired from a cannon