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

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