INTRO TO DISTANCE,
DISPLACEMENT, SPEED, VELOCITY
QUIZ REVIEW
Position of a truck on a trip. Use the graph to answer
the questions.
b
Describe the motion of the truck at segments A and
B relative to “home”
(hundreds)
a) Segment A (0-6 minutes)
a
Moving away from home
b) Segment B (11 minutes)
stopped
Position of a truck on a trip. Use the graph to answer
the questions.
What is the average speed of the truck between 0-6
minutes?
b
𝑠=
𝑑
𝑡
=
1000𝑚
6 𝑚𝑖𝑛
= 166.67 m/min
(hundreds)
What is the truck’s instantaneous speed at 5 minutes?
a
𝑠=
800 𝑚
5 𝑚𝑖𝑛
= 160 m/min
What is the overall average speed of the truck for its
entire trip?
𝑠=
Time (min)
1,000 𝑚
11 𝑚𝑖𝑛
= 90.91 m/min
Julie decides to meet her friends at the park, but she needs to
buy a Frisbee before he gets there. So Julie leaves her house
and walks 3 miles north to the store to buy her Frisbee, then
walks 2 miles south to get to the park to meet her friends.
What is the total distance Julie traveled?
3 mi + 2 mi = 5 mi
What is Julie’s displacement? (you may draw a picture to help you out)
3 mi – 2 mi = 1 mi North
What is the difference between speed and velocity?
SPEED – distance traveled per unit of time
VELOCITY – speed in a given direction
What is the velocity of a car that travels a distance of
305 miles from Pittsburgh to Philadelphia in 5.6 hours?
Given:
Formula:
d = 305 mi
𝑠=
𝑑
𝑡
t = 5.6 hr
Work Space: 𝑠 =
Find:
Velocity
305𝑚𝑖
5.6 ℎ𝑟
= 54.46 mi/hr
Final Answer:
54.46 mi/hr East
How long does it take a plane to go from Hong Kong to
Los Angeles if its speed for the trip is 550 mi/hr and
the total distance is 7865 miles?
Given:
Formula:
s = 550 mi
t=
𝑑
𝑠
d = 7865 hr
Work Space t =
Find:
time
Final Answer:
14.3 hr
7865𝑚𝑖
550 𝑚𝑖/ℎ𝑟
= 14.3 hr
How far does a person run if they average 14.8 km/hr
for a total of 1.2 hours?
Given:
Formula:
s = 14.8 km/hr
t = 1.2 hr
d=sxt
Work Space d = (14.8km/hr)(1.2 hr) = 17.76 km
Find:
distance
Final Answer:
17.76km