Flashcards in Unit Three Deck (27):

1

## What is the formula for speed

### S=d/t

2

## On a distance time graph what is the X and y axis and what would the slope tell you

###
Distance = y

Time= X

Slope tells you speed

3

## What is the formula for distance

### D = s X t

4

## What is terminal velocity

### When objects stop accelerating and fall at a constant speed

5

## How is terminal velocity related to surface area and mass

###
No relation to mass

Larger surface area. Slower terminal velocity

6

## What is the formula for acceleration

###
A= f/m

A= s/t

A=

vf - vi

------

T

7

## On a speed time graph what does the slope give you

### Acceleration

8

## What is inertia

### Tendency of objects to keep doing what they are doing, resist change

9

## What is meant by the term equilibrium and what can an object in equilibrium be doing

### All forces are equal and constant speed or not moving

10

## If an object has a net force other than zero what is happening

### Accelerating or decelerating

11

## Is a car moving around a circular track going at a constant speed

### Yes

12

## What is the relationship between force and acceleration

###
When force increases

Acceleration increases

13

## What is Newton's second law

### F = m X a

14

## What are the units for m, f, and a

###
M = kg

F= n

A= m/s/s

15

## What is Newton's third law

### For every action there is an equal and opposite reaction

16

## Explain how an interaction works when you push on a wall with a force of 5N

### It pushes back with 5N

17

## If the force of a bat against the ball is the action what is the reaction

### Ball pushing on the bat

18

## What experiences the greater force a bug or a windshield

### Neither because the same force is exerted due to Newton's third law

19

## Why does the cannon not travel as far as the cannonball

### Because the cannon has a lager mass

20

## What is G gravity

###
Universal gravitation: gravitational attraction of all objects in the universe

6.67 X 10 -11

21

## What happened to the force of attraction between two objects if the distance between them is cut in half

### Force increased

22

## What happens to the force of attraction between two objects if the mass of one object is doubled

### Force decreased

23

## What has more effect on the tides of the earth, the moon or sun

### The moon

24

## How do you calculate weight

### 10 m/s/s X kg

25

## What force opposes motion

### Friction

26

## What is the distance formula

### D = 1/2 a t (2)

27