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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

What does frame of reference refer to

Something assumed to be stationary, used to judge motion