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

K 8th Grade > Conceptual Physics-Laws of Motion Unit-Newton's Laws 1/2, Acceleration, and Center of Mass > Flashcards

Flashcards in Conceptual Physics-Laws of Motion Unit-Newton's Laws 1/2, Acceleration, and Center of Mass Deck (13):
1

acceleration

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

2

Newton's First Law

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.

3

Inertia

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

4

How is mass related to inertia

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

5

What is the unit for acceleration?

m/s/s or m/s^2
meters per second per second

6

What is the formula for acceleration?

acceleration=change in velocity over time
or acceleration=end speed minus start speed over time

7

What is the acceleration of any object due to gravity?

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

8

newton's Second Law

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

9

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

Unbalanced

10

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

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.

11

What do you need to balance an object?

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

12

Center of Mass

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

13

Objects balance on...

their Center of Mass

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