Ch. 1 - Concepts of Motion

Question 1

What is a motion diagram?

Answer 1

a diagram that shows object’s position at several equally spaced time intervals

Question 2

What is a scalar?

Answer 2

single number with a unit that describes a physical quantity

Question 3

What signs can a scalar have?

Answer 3

pos, neg, zero

Question 4

What is a vector?

Answer 4

a quantity with a size and a direction

Question 5

What signs does a vector have?

Answer 5

pos or neg

Question 6

What does a zero vector indicate about the vector’s length?

Answer 6

no length

Question 7

What happens to displacement vector lengths when an object is speeding up?

Answer 7

length increases

Question 8

What happens to displacement vector lengths when an object is slowing down?

Answer 8

length decreases

Question 9

How is average speed calculated?

Answer 9

distance traveled / time interval spent traveling

Question 10

What does the length of a velocity vector indicate?

Answer 10

average speed the object is moving at that position