Stopping Distance Teacher: Chelsea Hoglund Summer Institute 2011.

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Presentation transcript:

Stopping Distance Teacher: Chelsea Hoglund Summer Institute 2011

DEMONSTRATION OF STOPPING DISTANCES DEMONSTRATION OF STOPPING DISTANCES

SPEED REACTION DISTANCE BRAKING DISTANCE TOTAL DISTANCE

SIMULATION

WHAT DID YOU NOTICE?

Reaction Distance Braking Distance Total Distance = Reaction Distance + Braking Distance

NEW VOCABULARY TERMS??

FORMULA TO CALCULATE STOPPING DISTANCE Reaction Distance Assuming Reaction Time is 2.5 Seconds Assuming grade is 0% Total Distance = R + B Braking Distance V = Velocity

SCENARIO 1: If you are driving 34 mph and see a cat in the road 200 feet ahead will you stop in time to avoid hitting the cat?

SCENARIO 2: You are driving 48 mph and see a mother duck and her ducklings crossing the road 550 feet ahead. If you stop now, will you be able to stop in time to avoid hitting them?

CHALLENGE: You stopped your car in 500 feet, how fast were you going?