9/4/2013
The 3 formulas for Speed, Time & Distance:
Reminder: How to change minutes into a decimal
15 mins = 0.25 hour
Speed =
Distance
Time
Solving for Speed
Time =
Distance
Speed
Solving for Time
Distance = Speed x Time
So: 3 hours 15 mins = 3.25 hours
30 mins = 0.5 hour
Solving for Distance
So: 7 hours 30 mins = 7.5 hours
45 mins = 0.75 hour
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Remember them from
this triangle:
So: 2 hours 45 mins = 2.75 hours
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For a random # of minutes
6 minutes = 6 min/(60 min/hour)
T
So: 6 minutes = 0.1 hours
If Steve throws the football 50 meters in 3 seconds, what
is the average speed (velocity) of the football?
If it takes Ashley 3.0 seconds to run from the batter’s
box to first base at an average speed (velocity) of 6.5
meters/second, what is the distance she covers in that
time?
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Bart ran 5000 meters from the cops and an
average speed of 6 meters/second before he got
caught. How long did he run?
If Justin races his Chevy S-10 down Highway 37 for
2560 meters in 60 seconds, what is his average
speed (velocity)?
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9/4/2013
Mike rides his motorcycle at an average speed (velocity)
of 20 meters/second for 500 seconds, how far did he
ride?
Sarah backstrokes at an average speed of 8
meters per second, how long will it take her to
complete the race of 200 meters length?
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Lauren’s SUV was detected exceeding the posted speed
limit of 60 km/hr. How many kilometers per hour
would she have been traveling if she had covered a
distance of 10 kilometers in 5 minutes?
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Tina’s calculations of the tarantula found that the spider
was able to cover 20 centimeters in 5 seconds. What
was the average speed of the spider? (in meters/sec)
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