Transcript When Two Cars of Different Speeds Race

When Two Cars of Different
Speeds Race
• How much is each line worth on the vertical
axis?
• 1 minute
• 2. How long does it take the P line to reach
3,000/4,000km?
• 5:40/7:02
• 3. How long does it take the S line to reach
3,000/4,000km?
• 10:10/12:40
•4. How far does the P line get in 9/10 minutes?
• 5,600/6,600km
How?
•5. How far does the S line get in 9/10 minutes?
• 2,600/2,900km
How?
• 6. Which line represents a faster speed?
• P
•7. If the Porsche and Saturn both traveled
4,000/5,000km, how much longer will it take
the Saturn to reach the 4,000/5,000km mark?
• 5:40/6:25
How?
•8. If the Porsche and Saturn both
traveled 7,600km, how much longer
will it take the Saturn to reach the
7,600km mark?
• 9:00
How?
•9. If the Saturn arrives at a location
0:05:40/0:06:35 after the Porsche gets there,
how far did they travel (they both traveled the
same distance)?
• 4,000/5,000km
How?
•10. If the Saturn arrives at a location
0:07:35 after the Porsche gets there, how
far did they travel (they both traveled the
same distance)?
• 6,000km
How?
11. If the Porsche travels 2,600/3,600km and
arrives at your door at exactly 1:00:00pm, what
time did it start its journey to your house?
• 5:00/6:30 travel time 
• 12:55:00/12:53:30
How?
•12. If the Porsche travels 3,800km and
arrives at your door at exactly
3:00:00/4:00:00pm, what time did it start its
journey to your house?
• 2:53:20/3:53:20
How?
•13. If the Porsche travels 6,500km and arrives at
your door at exactly 7:25:05/8:25:05am, what time
did it start its journey to your house?
• 7:15:05/8:15:05
How?
•14a. The Porsche and Saturn arrive
separated by 6:40 minutes. How far
did they travel?
• 4,800km
How?
14b. Same problem as 14a: If the
Porsche arrives at 2:40:00pm, what
time did it start?
• 2:32:40
How?
4
4
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5
7
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11
11
1:00:00
-5:00
12:55:00
1:00:00
-6:30
12:53:30
12
4:00:00
-6:40
3:53:20
12
3:00:00
-6:40
2:53:20
13
7:25:05
-10:00
7:15:05
8:25:05
-10:00
8:15:05
14a
14b
2:40:00
-8:00
2:32:00