At a Snail's Pace: The race continues.
KEY CONCEPT
The rate of change in velocity is known as acceleration
In the last section, three snails began a race along a meter stick.  When you last saw the snails, they had just completed 10 minutes of their race.  Let's see what is happening to the snails now.
1.  At 10:15 am, Snail 1 crossed the 65-cm mark with a velocity of 4 cm/min.  In a great burst of energy.  Snail 1 raced to the 90-cm mark in 3 minutes.  His velocity as he crossed the 90-cm mark was 7 cm/min.  What was the acceleration of Snail 1?
 
 
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    2.  Snail 2, the speedy snail, flew past the 90-cm mark at 10:15 am  with a velocity of 7 cm/min.  Unfortunately, Snail 2 stubbed  his foot on the meter stick and could only limp across the 93-cm mark 3 minutes later with a velocity of 1 cm/min.  Calculate the acceleration of Snail 2.
 
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    3.  Snail 3 trying to keep up with Snail 2 managed to get to the 80-cm mark at 10:15 am with a velocity of 6 cm/min.  Continuing his excellent effort, he crossed the finish line with a velocity of 7.2 cm/min and gobbled the lettuce leaves at exactly 10:18 am.  What was the acceleration of the winning snail?
 
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