Wednesday, March 28, 2012

Surfing For Reaction Distance Time?

Richard asks…PHYSICS: How do you find time given velocity,acceleration and distance ?The answer is 0.468 seconds.

* A vehicle is travelling at 25.0 m/s. Its brakes provide an acceleration of -3.75 m/s ^2 (forward). What is the driver's maximum reaction time if she is to avoid hitting an obstacle 95.0 m away.Nancy answers:Her "reaction time", Tr is the time between when she sees the obstacle and when she actually applies the brakes. Presumably she'll be traveling at a constant speed during

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