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Question 39

What is the difference between speed and velocity?

a
Velocity has weight.
b
Velocity has direction.
c
Velocity has time.
d
Velocity has distance.
Question 40
An ant on a picnic table travels 30.0 cm to the east, then 15.0 cm to the west. What is the magnitude of the ant's displacement from its original position?

a
15 cm to the west
b
15 cm to the east
c
45 cm to the west
d
45 cm to the east

1 answer

Question 39: The difference between speed and velocity is that velocity has direction.

Correct answer: b. Velocity has direction.

Question 40: The ant travels 30.0 cm to the east and then 15.0 cm to the west. To find the displacement, we subtract the westward movement from the eastward movement:

Displacement = Distance to the east - Distance to the west = 30.0 cm - 15.0 cm = 15.0 cm to the east.

Correct answer: b. 15 cm to the east.