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Vocabulary
Numbers Only
Word Problems
Speed Graphs
Averages/Mean
100
What is the speed ratio or rate.
The distance compared to time (or distance over time)
100
s = 80 mph d = 100 miles t = ?
1.25 hours or 1 hour and 15 minutes
100
Avery walked around the dodgeball court at a rate of 540 m in 6 minutes. Find his average speed in m/hr.
5400 m/hr
100
What does a horizontal line mean?
Stops
100
65 days, 22 days, 73 days, 95 days Mean?
63.75 days
200
What does the speed triangle allow us to do?
Calculate distance, time, or speed if we know 2 of the 3 values.
200
s= ? miles/hour d = 100 miles t = 40 mins
150 mph
200
An airplane flew from Los Angeles International Airport to Las Vegas in 3 hours, covering a distance of 550 km per hour. On the return trip the airplane had to fly through rough weather, and the average speed was reduced by 50 km/h. How many hours did the plane take to return from Las Vegas to Los Angeles?
3.3 hours or 3 hours and 18 minutes
200
What does a vertical line mean?
Impossible because distance is changing but time isn't.
200
9000 cm, 124 m, 1.2 km, 40 m Mean in meters?
363.5 m
300
What is average speed?
Total distance covered over the total amount of time
300
s = 62 km/h t = 15 mins d= ? km
15.5 km
300
Cities W and Z are 320 km apart. A train traveled for 3 hours, and covered 75% of the whole journey. Find the average speed of the train.
80 km/h
300
How do you show constant speed?
straight line with some steepness (slope)
300
12 oz, 19 oz, 3 lb, 32 oz Mean in ounces?
27.75 ounces
400
What are 4 other ways to describe uniform speed?
steady speed fixed speed constant speed given speed
400
What is my average speed if I traveled 45 km/h for the first 45 minutes and 60 km/h for the last 15 mins? ? km/h
48.75 km/h
400
Santos drove his car at an average speed of 80 mi/h for 5 minutes and 55 mi/h for 15 minutes. What was the total distance of his journey? Distance must be in miles and kept as a fraction.
20 and 5/12 miles
400
How do you show that you start out slow then go faster and faster?
Curved line
400
16, 24, 27, x, 33, 41 x = ?
27
500
Why is speed a rate and not just a ratio?
Comparing different units. Rate is a special ratio.
500
s = 75 mph d = 36 miles t = ? minutes and ? seconds?
28 minutes and 48 seconds
500
A big rig truck delivering Valentine's Day presents is 150 m long. It moves towards a tunnel at a speed of 20 m/s. It takes 3 minutes 30 seconds for the entire length of the truck to pass through the tunnel. How long is this tunnel?
4050 meters
500
For speed graphs, what should you label the x and y axes?
x = time y = distance
500
Students have $14, $6, $24, $9, $25. What must Jenny bring in order for the class average to be $16?
$18