Newtons Laws

Question 1

What is newtons 1st law called?

Answer 1

The law of inertia

Question 2

Inertia

Answer 2

An objects resistance to change its current state of motion

- more mass something has the more inertia it will have

Question 3

What is force?

Answer 3

A push or pull
- when an unbalanced force is applied an object will accelerate, decelerate, and/or change direction
This means the force was strong enough to overcome the objects inertia
- on earth Gravity is a force acting on all objects at all times keeping them on the surface
The ground pushing back up on you is called a support force

Question 4

2nd law

Answer 4

When an unbalanced force is applied an oject will accelerate( change speed and/or direction)
F=ma

Question 5

Mass

Answer 5

How much “stuff” something is made of
It is measured in grams…. We will use Kg which is 1000 grams
- is not related to gravity

Question 6

Friction

Answer 6

The force that resists an objects motion
•air resistance(drag)
•water resistance(viscous friction)
•friction can also occur with the ground or between two objects running together 
    -friction generates heat

Question 7

Newton

Answer 7

The force necessary to give a 1kg mass an acceleration of 1m/s^2

1N = 1kg x 1 m/S^2

Question 8

Force equation

Answer 8

F=ma

Question 9

Mass equation

Answer 9

M=f/a

Question 10

Acceleration equation

Answer 10

A=f/m
A= vf-vi
_____
T

Question 11

Directly proportional

Answer 11

1 magnitude increases So does the other

Force and acceleration are directly proportional…if the force doubles the the acceleration will double

Question 12

1st law

Answer 12

An object at rest stays at rest

• this means objects remain motionless or keep moving in a straight line unless acted on by a force
• objects will not accelerate, decelerate, or change direction unless an unablanced force acts on it

Question 13

Inversely proportional

Answer 13

When 1 magnitude increases the other decreases

Mass and acceleration are inversely proportional…. If the mad doubles then the acceleration will be cut in half… If the mass is cut in half the acceleration will double

Question 14

Weight

Answer 14

Wheat is measured of gravitational force between two options

• the weight does not Chang when the amount is moved from earth to the moon
• weight is commonly measured in newtons or pounds

Question 15

Where do would you weigh more the moon or the earth?

Answer 15

The earth because there is more gravity

Question 16

Where would you weigh more the sun or the earth

Answer 16

The sun because there are more gravity