Forces

Question 1

Define a force

Answer 1

A force is a push pull or twist

Question 2

What can a force do?

Answer 2

They can change shape, direction and speed.

Question 3

Define a contact force

Answer 3

A force that requires contact to create a change.

Question 4

Explain and name and example of a non-contact and contact force

Answer 4

a contact requires contact to create a change twist whilst a non-contact is also a field force and doesn’t need contact to cause an effect like magnestism

Question 5

Define an unbalanced force

Answer 5

When two forces go aginst each other, if one is stronger it goes against them

Question 6

Is this an unbalanced force?
—–> 25n <————- 50n

Answer 6

yes

Question 7

Define friction

Answer 7

Friction is a force that opposes motion and creates heat and slows them down

Question 8

When is friction a help

Answer 8

Friction helps stop cars which is why we have asphalt roads.

Question 9

How do you reduce friction

Answer 9

You can have a smoother surface and add oil or a lubricant.

Question 10

What is a field force

Answer 10

it is a force that requires no contact

Question 11

Give 3 examples of a field force

Answer 11

Gravity, magnestism and electomagnestism

Question 12

Where does Earth’s gravity pulls towards

Answer 12

IT PULLS TOWARDS THE CENTER

Question 13

Define weight

Answer 13

It is how heavy our mass is affected by gravity.

Question 14

What is the difference between weight and mass?

Answer 14

Mass is always constant and and it is the amount of matter in a space. Weight is mass afflicted by gravity. It can change.

Question 15

Define a situation when gravity is an unbalanced force :)

Answer 15

When you jump at force gravity is not strong enough but when that force wears down it is unbalanced and strong and it pulls you down.

Question 16

Name a material that is attracted to a magnet.

Answer 16

Iron and colbalt.

Question 17

Describe what happens when two poles come together?

Answer 17

When two opposites come, they attract. When two like come together they repel.

Question 18

How are magnets used in our everyday life

Answer 18

Magnets are used by holding up the fridge magnets and to create tight doors.

Question 19

What happnes it you bring a charged object to an uncharged object

Answer 19

The charged object charhes the uncharged object and the unchatged object creates a temporary feild.

Question 20

using, electrostatic, how does thunderstorms work

Answer 20

Water particles rub against each other and create friction. Electrons get transfered to ther places and creates build up of charge. When the charged, it tries to find opposite charge.