newtons laws of motion Flashcards

-Be able to show an understanding of Newton's Laws motion

1
Q

what is the first law of motion?

A

An object at rest remains at rest , and an object in motion remains in motion unless an external, unbalanced force acts upon it.

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2
Q

What is the second law of motion?

A

The acceleration of an object depends on the mass of the object and the amount of force applied.

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3
Q

What is the third law of motion?

A

If object A exerts an a force on object B , then object B exerts an equal and opposite force on object A.

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4
Q

What does acceleration mean?

A

The rate of change of velocity per unit of time.

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5
Q

What does deceleration mean?

A

The rate of decrease in velocity

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6
Q

What does inertia mean?

A

the tendency of a body to resist the change in motion or rest.

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7
Q

What is meant by ‘ equal and opposite force ‘ ?

A

the force the electrons exerts on us when we are pushing it.

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8
Q

What is meant by ‘ For every action there is a reaction ‘ ?

A

it means that in every interaction there is a pair if forces acting on the two objects.

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9
Q

What does exert mean?

A

to put force on something

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10
Q

What is meant by a ‘balanced force ‘ ?

A

when two forces of equal size act on a body in opposite directions.

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11
Q

What is meant by an ‘ unbalanced force ‘ ?

A

A force where two forces acting in opposing directions on a body are not equal in magnitude and size.

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12
Q

summarise first law of motion.

A

law of inertia

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13
Q

summarise second law of motion.

A

f = m * a

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14
Q

summarise third law of motion.

A

action/ reaction

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