Energy

Question 1

What is force?

Answer 1

Force is a push or pull.

Question 2

What is pressure?

Answer 2

Any force that is applied on an area is pressure.

Question 3

What are springs?

Answer 3

Springs are material and objects that can be stretched or compressed.

Question 4

Explain the limit of proportionality.

Answer 4

The extension of a spring is proportional to the force up to a certain point this called the limit of proportionality.

Question 5

What is the idea that the proportional to the force is called?

Answer 5

Hooke’s Law.( Remember, Hooke’s Law does not apply to all elastic objects. )

Question 6

Which is easier - To cut something with sharp knife or with blunt knife? Why?

Answer 6

It is easier cut something with a sharp knife because the sharp knife has a small edge, so the force that you put on the knife is more concentrated over a smaller area on the object you are cutting.