Conceptual Physics-Laws of Motion Unit-Newton's Laws 1/2, Acceleration, and Center of Mass Flashcards

1
Q

acceleration

A

change in velocity; speed up; slow down; change direction; stop moving; start moving

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2
Q

Newton’s First Law

A

When forces are balanced, an object at rest will remain at rest, and an object in motion will remain in motion with constant speed in a straight line path.

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3
Q

Inertia

A

the natural tendency of an object to stay at rest or stay in motion

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4
Q

How is mass related to inertia

A

There is a direct relationship between mass and inertia; mass is a measure of inetia

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5
Q

What is the unit for acceleration?

A

m/s/s or m/s^2

meters per second per second

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6
Q

What is the formula for acceleration?

A

acceleration=change in velocity over time

or acceleration=end speed minus start speed over time

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7
Q

What is the acceleration of any object due to gravity?

A

10 m/s/s (exactly 9.8 m/s/s)

32 ft/s/s

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8
Q

newton’s Second Law

A

Objects accelerate when an unbalanced force is applied, in the same direction as and at a speed proportional to the force

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9
Q

Does Newton’s Second Law relate to balanced or unbalanced forces?

A

Unbalanced

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10
Q

Give examples from sports when Newton’s first and second laws apply.

A

Examples: Note- First Law must have all balanced forces, aka, no acceleration except for gravity, Second Law must have an unbalanced force currently being applied.

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11
Q

What do you need to balance an object?

A

You need to support it under it’s center of mass.

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12
Q

Center of Mass

A

the point at which all the mass of the object is considered to be concentrated for calculations concerning the motion of the object

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13
Q

Objects balance on…

A

their Center of Mass

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