pp 44-46

Question 1

What term describes a vector showing the combined effect of two or more vectors?

Answer 1

resultant

Question 2

What do the letters in the formula for displacement represent?

Answer 2

Question 3

What are the two components of a vector quantity?

Answer 3

magnitude and direction

Question 4

has both magnitude and direction

Answer 4

vector quantity

Question 5

has only magnitude (size or amount)

Answer 5

scalar quantity

Question 6

Contrast speed and velocity

Answer 6

speed is scalar measuring the distance covered by an object per unit time; velocity is vector measuring the displacement of an object per unit time

Question 7

What is the formula for displacement

Answer 7

Question 8

Define distance

Answer 8

scalar representing the total length of an object’s path

Question 9

The brances of physics developed before 1900, including mechanics, thermodynamics, optics, acoustics, and electromagnetism

Answer 9

classical physics

Question 10

The more recent contributions including quantum mechanics, relativity, solid-state physics, and particle physics

Answer 10

modern physics

Question 11

a vector representing an object’s change in position

Answer 11

displacement

Question 12

Define mechanics

Answer 12

branch of physics that addresses the effects of forces on matter

Question 13

the Greek capital letter which is used to represent the change in a value

Answer 13

delta, Δ

Question 14

the total length of the object’s path

Answer 14

distance

Question 15

Define displacement

Answer 15

vector representing an object’s change in position