Vocabulary
and
Concepts
and
Concepts
Random
Displacement
vs.
Time
Graphs
vs.
Time
Graphs
Velocity
vs.
Time
Graphs
vs.
Time
Graphs
Acceleration
100
What is the position of an object relative to its starting point?
displacement
100
See PPT slide 11
distance = 55 m
displacement = -15 m
100
See PPT slide 6
the object is moving in the negative direction at a constant velocity
100
See PPT slide 1
speeding up in the negative direction from 0 m/s to -3 m/s
100
You are a passenger on a bus which is able to accelerate from rest to 10.0 m/s in 8.00 s. Determine the average acceleration of the bus.
1.25 m/s^2
200
What represents the change in height?
the vertical displacement
200
If a hammer and feather are dropped on the moon (no air resistance, which hits the ground first?
They hit at the same time.
200
see PPT slide 7
From 0 - 10s
200
See PPT slide 2
none of the letters
200
A bicyclist is traveling at +25 m/s when he begins to decelerate at -4 m/s/s. How fast is he traveling after 5 seconds?
5 m/s
250
If an object is moving to the left but accelerating to the right what is it doing?
Slowing Down
250
If I run 20 meters to a tree and 20 meters back what is my distance and displacement?
distance=20m
displacement=0m
250
Draw a displacement time graph for an object falling
250
Draw an acceleration time graph for something falling
300
To find the velocity of an object represented by a displacement vs time graph we take the ______.
slope
300
You throw a baseball up at a speed of 16 m/s how high does it go in .96 s?
10.8 m
300
See PPT slide 8
-2 m/s
300
See PPT slide 3
- 0.15 m/s
300
A car going 10.0 m/s slams on the brakes and skids to a stop, accelerating at a rate of – 6.86 m/s^2. How far did the car travel before coming to rest?
7.29 m
400
How do you find the displacement on a velocity vs. time graph?
Area
400
A soccer ball is kicked horizontally at 15 m/s from a cliff 10 meters above the ground how far from the cliff does it land?
Use an xy chart
find time first
t=1.42s
So
x=21 m
400
See PPT slide 9
Slowing down in the positive direction
400
See PPT slide 4
Segment C
400
If a bullet leaves the muzzle of a rifle at 600.0 m/s,
and the barrel is 0.90 m long, what was the acceleration
of the bullet while in the barrel?
200,000 m/s/s
500
The value of Vi at max height
0
500
A plane drops a package from 150 m above the ground. How fast is it moving right before it hits the ground?
54m/s
500
See PPT slide 10
(1) The person is traveling in the positive direction for 20 s at a constant velocity of 0.75 m/s. They travel from 0 m to 15 m at that velocity. (2) The person stands still at 15 m for 10 s. Their velocity is 0 m/s because they are not moving. (3) The person then continues in the positive direction at a constant velocity of 1 m/s. They travel from 15 m to 25 m.
500
See PPT slide 5
70 m
500
A bike first accelerates from 0.0 m/s to 5.0 m/s in 4.5 s, then continues at this constant speed for another 4.5 s. What is the total distance traveled by the bike?
33.75 m