Do Now -Solve and Indicate if the acceleration is positive or negative. Why?  A car is starting its race from the home and increases his speed to 40m/s.

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Presentation transcript:

Do Now -Solve and Indicate if the acceleration is positive or negative. Why?  A car is starting its race from the home and increases his speed to 40m/s over the course of the first 5 seconds. What is the race cars acceleration?  A cyclist is driving at a rate of 10m/s and slows his speed to 2 m/s when he sees a large hill. He does this in 2 seconds.. What is the acceleration?

Physics Talk  How do you calculate braking distance?  V i 2 =-2ad

Physics Talk  How do you calculate braking distance?  V i 2 =-2ad vi2vi2 -2a d

Checking up pg. 82, #1-3

IN GROUPS-Use Gutau to solve  A car is traveling at 20m/s, 10 meters ahead a deer runs on the road and the driver hits his brakes…What is the car’s acceleration? Use the braking distance formula to solve…..

WDYTN pg86