What was the driver''s reaction time

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Q1. A woman stands on a scale in a moving elevator. Her mass is 60.9 kg, and the combined mass of the elevator and scale is an additional 819 kg. Starting from rest, the elevator accelerates upward. Through the acceleration, the hoisting cable applies a force of 9410 N. What does the scale read during acceleration?

Q2. A driver travelling at 56.0 km/h sees the chicken dash out onto the road and slams on the brakes. Accelerating at -7 m/s2, car stops just in time 23.80 m down the road. What was the driver's reaction time?

Reference no: EM1313373

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