Physical Science- module 10

Question 1

Define “kinetic friction”.

Answer 1

The friction that exists between two surfaces when at least one of those surfaces is moving relative to the other.

Question 2

Define “static friction”.

Answer 2

The friction that exists between two surfaces when neither surface is moving relative to the other.

Question 3

What is Newton’s first law of motion?

Answer 3

The velocity of an object will not change unless acted upon by an outside force.

Question 4

What is Newton’s second law of motion?

Answer 4

When an object is acted upon by an outside force, the strength of that force is equal to the mass of the object times the resulting acceleration.

Question 5

What is Newton’s third law of motion?

Answer 5

For every action, there is an equal and opposite reaction.

Question 6

Define “friction”.

Answer 6

A force resulting from the contact of two surfaces. This force opposes motion.

Question 7

What is the definition of a Newton?

Answer 7

The Newton is defined as kilograms times meters per second squared.