Ph11
Assign #9
Constant Speed
STANDARD QUESTIONS
1)
A high school athlete runs 100m in 12.2s. Find her average speed in
standard units of m/s
2)
A boy walks 13km in 2.0h. Find his speed in m/s
3)
A bullet moves at 720m/s. Find it’s time to travel 3240m
4)
Find the time for a photon of light to reach the earth (answer in minutes)
(Hint: Use your data table to find the speed of light, and the distance from
earth to the sun)
5)
A car travels at 65km/h for half an hour. Find the distance it travelled in km.
iPad QUESTIONS
6)
Viking 1 was the first spacecraft to land on Mars, travelling at 7.00x 108 km in
303d. Find the average speed in km/s
Support your answer with a picture of this spacecraft, and the day of
landing on Mars
7)
In 1972, Dave Wottle (the guy with the baseball cap!) ran the
800m race (2 laps of the track) in the Olympic final. Best Race Ever!
(Note: Amazing crazy comments after the race by the announcer!!!)
Determine his average speed for the race, by watching his race from this
video to get his official time for that distance. Support your answer with a
picture of Dave Wottle at the finish line!
http://www.youtube.com/watch?v=5LHid-nC45k
Dave Wottle 800m Race 1972
8)
What is your reaction time. Go to this web site and find your reaction time.
Use your average time for 5 trials in the problem below:
*Make sure you capture of your average reaction time before your leave your
web page.
http://www.humanbenchmark.com/tests/reactiontime/
Suppose you were driving down the road at 60km/h and a dog runs out in
front of your car. How far will your car travel based on your reaction time
above. Answer in meters.
9)
a) Find the distance (in metres) between the pitcher mound in baseball and
home plate.
d = ________
http://en.wikipedia.org/wiki/Baseball_field
b) What was the fastest pitch ever recorded in baseball?
http://www.youtube.com/watch?v=ngubly4hpHw
v= _______
c) Find the time the ball took to get to the plate in seconds
Note: in your conversion of mi/h to m/s, (use 1h=3600s, and 1Mi = 1609m)
Your Answer must show:
a) your calculations,
b) diagram of baseball dimensions,
c) picture of the pitcher, with his i)name and ii) team and iii) year
Ph11
Assign #10
Average Speed
(For several constant speed segments)
STANDARD QUESTIONS
1)
A plane flies at 300km/h for 4.0h, and then 400km/h for 2.5h.
Find his average speed of the trip in km/h
2)
A child on a bike goes 100m in 5s, then 200m in 15s. Find his average speed
of his trip.
3)
Find the average speed for a man who goes 6m in 10s, then travels at 10m/s
for the next 6 seconds.
4)
Find the average speed for a runner who goes 20m in 8s, then goes at 12m/s
for 5 seconds, and then travels the next 30m in 12s.
iPad QUESTIONS:
5)
a) An ostrich runs at 20m/s for 4s, then goes 90m in 6s, and then goes 60m at
30m/s and then goes at 25m/s for 7s. Find his average speed of the trip.
You have to watch this short cartoon!!!!! History is made!!!!
http://www.youtube.com/watch?v=KJJW7EF5aVk
b) Find out how fast an ostrich can run! It is the fastest running bird.
Watch this video. Capture a picture of it running and caption it with its
maximum speed.
http://www.youtube.com/watch?v=1r-b8uY7C9E
6)
An ironman race involves the following distances:
a) 3.86km swim,
b) 185.07m bike
c) 42.195km run
If the 2014 GoPro Hawaii ironman Champion did the following times, find his
average speed for the complete race:
Swim: 00:51min :02s,
Bike 4h:25min:37s, Run: 2h:51min:18s
Watch one of the most famous ironman finishes ever!!!
Capture a picture of the two women together at some point in their race.
http://www.youtube.com/watch?v=MTn1v5TGK_w
Ph11
Assign #11
Speed of Sound
STANDARD QUESTIONS
1) Calculate the speed of sound at the following temperatures:
a) 20˚C
b) temperature at which water freezes
c) typical Saskatchewan winder day! (-25˚C)
2)
Calculate the temperature of the air, based on the following sound speeds:
a) v = 342m/s
b) v = 322m/s
iPad QUESTIONS:
3)
What is the hottest temperature ever recorded on earth?
T = __________
Insert a picture of that location below. Calculate the speed of sound at this
location.
4)
What is the coldest temperature ever recorded on earth?
T = __________
Insert a picture of that location below. Calculate the speed of sound at this
location.
Ph11
Assign #12
Echo Problems
STANDARD QUESTIONS
1)
A woman stands in front of a cliff and yells. The echo time is 1.4s. Find the
distance of the person to the cliff.
2)
A student is 100m in front of a wall and claps his hands and hears his echo
0.6s later. Find the air temperature.
3)
A ship is travelling near land and sounds off his whistle. Its echo is heard 11s
later. If the air temperature is 10˚C, find the distance to the cliff.
4)
A man stands 40m in front of a large cliff and shouts.
If the air temperature is 18˚C, find his echo time.
iPad QUESTION:
5)
a) Using your moon app called “moon.”,
find the distance to the moon right now!
d = ________
b) In 1969, the first astronauts to walk on the moon from Apollo 11 placed a
reflector on the moon. Find a picture of that reflector and insert below
c) If a laser beam is sent to the moon and it reflects back, find the echo time.
(assume the laser beam travels at the speed of light, which you can look up
in your physics 11 data table)
d)
Watch this Big Bang Theory Clip!
What was their echo time?
t = _______
http://www.youtube.com/watch?v=tL1OATdBoY8
Capture a picture of that episode here:
e)
Find the % difference in your measurements using the following
formula:
% difference = (difference of the measurements) x 100%
(average of the measurements)
Further investigation: See these cool videos!
Apollo 11 Launch in High Definition: (2 Min)
http://www.youtube.com/watch?v=D7Kmij23ThE
Mythbusters Video about the Reflector on the Moon! (4 Min )
http://www.youtube.com/watch?v=VmVxSFnjYCA
Ph11
Assign #13
Simultaneous Equations!
STANDARD QUESTIONS
1)
A blue plane is flying east at 300km/h toward a red plane that is flying at
400km/h west. If they leave their respective towns at the same time, and the
distance between the towns is 500km, find
a) the time they will meet
b) the distance flown by the blue plane
c) the distance flown by the red plane
2)
Toronto is 50km from Hamilton. If a freight train leaves Hamilton at 50km/h
and the Toronton passenger train travels at 75km/h, find…
a) the time they will meet
b) the distance travelled by the freight train.
c) the distance travelled by the passenger train.
iPad QUESTION:
3)
a) Find the distance between Vancouver and Seattle
d = ___________km
b) Suppose that a new track will be built that can travel as fast as a Japanese
Bullet train. Find the maximum speed of the Japanese Bullet Train
http://www.youtube.com/watch?v=k_eT4zq8eO0
v = ___________km/h
c) An Amtrak train leaves Seattle for Vancouver at 70km/h. At the same
time, a Bullet train leaves Vancouver, travelling at the speed from above.
Find:
i) the time they will meet
ii) the distance travelled by the Amtrak train
iii) the distance flown by the Bullet train
d) Place a picture of an Amtrak train and a Bullet train next to each other for
comparison!
4)
Chasing Problem! (Two objects moving mean two equations of motion!)
Two airplanes leave an airport one hour apart.
The first orange plane leaves at 300km/h, and the second green plane leaves
an hour later at 400km/h to catch the first plane!
a) Find the distance the planes will travel from the airport
b) Find the time of travel by each plane, to the point of passing each other.