Scalar vs Vector
Is Speed a scalar or a vector quantity?
Scalar
G ran 3 laps around a 400 m track.
What was her distance and displacement?
Distance: 1200 m
Displacement: 0 meters
(Stick draw on board).
Vector 4 to the right + Vector 5 to the left.
Vector 1 to the left
(or -1)
How many Significant Figures are in the following number?
0.0030050
What is 5
Over what time interval is the object at a complete stop?
Is Velocity a scalar or a vector quantity?
Vector
Coach Stick made his team run to Barretville general store and back to the front of the high school. Knowing that the running from the high school to Barretville is exactly 1 mile, what are the runners' distance traveled and displacement?
Distance: 2 miles
Displacement: 0 miles
(Stick draw on board).
Vector 7 up + Vector 12 down.
Vector 5 down
(or -5)
On a Separate Sheet of paper...
Draw a particle model for a Addie as she accelerates to run from home plate to 1st base.
Use four points, make sure to have the correct spacing.
I gotta see yo paper
In what section of the graph is the object moving West?
Section III
OR
from time t = 8 to time t = 10
What is scalar.
Will drove 10 miles North, then stopped to use the restroom before driving another 20 miles directly North.
What are his displacement and distance?
Displacement: 30 miles North
Distance: 30 miles
If you drive North at a speed of 35.0 miles per hour and drive for 0.5 hours, how far will you have driven?
(Make sure to include direction)
17.5 miles North
(In situations like this, assume initial position is 0 unless the problem indicates otherwise)
Correct this false statement:
In physics, a negative sign represents a negative quantity.
Represents direction.
What is the SPEED of the object in section 3 of the graph?
(From time t = 8 to time t = 10?)
1 m/s
(velocity is -1 m/s)
T/F:
Displacement is a scalar quantity.
(Displacement depends on magnitude AND direction so it is a vector quantity.)
Sanfran flew due East for 200 miles, due South for 300 miles, and back West 200 miles.
What is his final displacement? Distance?
Displacement: 300 miles South
Distance: 700 miles
If you bike at a constant speed of 4 m/s for 5 seconds, what distance do you travel?
20 meters.
Is it possible for an object's position/time graph to be a horizontal line?
(Yes or No)
Yes
What is the average velocity over the time interval t = 5 seconds to t = 15 seconds?
(Make sure to include direction as well)
+ 0.3 m/s
T/F:
A scalar quantity involves BOTH magnitude and direction.
Challenge Question:
If Robby runs 16 yards down the field then cuts to his left and runs another 12 yards, at a perfect 90 degree angle, what is his displacement and distance?
20 yards
Pythagorean theorem yo
You and your sister both drive 400 km due East towards your grandmother's house. You drive at a speed of 75 km/h. Your sister drives at a speed of 80 km/h. How long will she arrive before you?
(Again, assume initial position is 0 because problem doesn't tell you otherwise.)
20 minutes sooner.
You are driving at 30 m/s and make a slight right turn and continue driving at the same speed without slowing down. Do you experience a change in velocity? Why?
Yes
Your direction changes.
What are the distance and displacement of the object over this time interval?
Make sure to include direction where necessary.
Distance: 12 meters
Displacement: 8 meters (to the East OR + OR right)