Vernier Software and Technology - Celebrating 35 years
Vernier Software & Technology
Innovative Uses

Police Car and Speeder

Ralph Newell, (South Portland HS, South Portland, ME) has developed an exercise using toy cars, which he reports has been a real hit with his students. Students use a Photogate to measure the speed of two constant-velocity toy cars. The challenge to the students is to predict where the faster (police) car will catch the slower (speeder) car if they start at the same instant, with the faster car one meter behind. The students are encouraged to solve this problem graphically, with Graphical Analysis or Logger Pro. Their grade depends partly on how close their prediction comes when the race is tried with the two cars.

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