Which Graph?
Average Acceleration
Review: Motion and Average Speed
What does it mean?
Definitions
100
Which color graph means 'moving at a constant speed'?
gray
100
!DOUBLE JEOPARDY!
Each group gets to try this one. Answers must be written down. DON'T be too loud when you discuss. If you get it right, you receive a double click.
A cyclist going down a hill accelerates from 3 m/s to 6 m/s in 6 seconds. What is the average acceleration?
.5 m/s2
OR
1/2 m/s2
100
If Snoop drove 160 km in 2 hr. What was his average speed?
80 km/hr
100
Which is fastest?
red
100
What word means, "distance divided by time"?
speed
200
Which color graph means 'increasing speed (positive acceleration)'?
green
200
A roller coaster slows down 24 m/s to 6 m/s in 3 seconds. What is the average acceleration?
(final velocity - starting velocity)
_________________________
time
6 m/s2
200
Use one of these equations:
d = s x t s = d/t t = d/s
A Porsche Panamera going flat out, traveled 312 meters in 3.9 seconds. What was his average speed?
NOT 80, but
80 m/s
200
What type of measurement is velocity and also acceleration?
They are vector measurements.
200
What is speed + direction?
velocity
300
Which color graph means, 'no motion'?
blue
300
A car advertisement states that a certain car can accelerate from rest to 31.29 m/s in 7 seconds. What is the car's average acceleration?
(final velocity - starting velocity)
_________________________
time
4.47 m/s2
300
Triple Jeopardy: All groups try. Triple click for correct answer.
The SpaceX Falcon 9 rocket travels 17,500 mi/hr., 260 miles above Earth. How far will it have traveled in 4 hours?
Here are the equations to choose from:
d = s x t s = d/t t = d/s
70,000 miles
300
What is the equation for?
(final velocity - starting velocity)
_________________________
time
acceleration
300
What is the rate at which velocity changes?
acceleration
400
Which color graph means, 'constant speed, then stops, then moves at a constant speed again'?
orange
400
The Bugatti Chiron Pur Sport accelerates from zero to 26.82 m/s in 2.2 seconds. What is it's average acceleration? Round to the 10ths place
(final velocity - starting velocity)
_________________________
time
12.19 m/s2
400
What equation would you use to solve this:
What was Forrest Gump's average speed per day after he ran 24539 km in 3 years and 60 days?
s = d/t
400
What are three ways that velocity can change (or acceleration can occur)?
A velocity can speed up, slow down or change direction.
400
What is any measurement that has both magnitude (how much or how many) and direction?
a vector
500
Which graph means, 'moves at a constant speed, stops, then goes back to the starting point'?
red
500
By folding it's wings, a Peregrine falcon can increase it's velocity from 10 m/s to 30.40 m/s in 6 seconds. What is it's average acceleration?
(final velocity - starting velocity)
_________________________
time
3.4 m/s2
500
Forrest Gump ran 24539 km in 1,155 days. What was his average speed per day? Remember your unit of measurement.
s = d/t d = t x s t = d/s
21.25 km/day
500
What does it mean?
constant speed; stops; constant speed
500
What is the definition of 'acceleration'?
the rate at which velocity changes