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A car moving initially at a speed of 50 mi/h (≈80 km/h) and weighing 3000 lb (≈13,000 N) is brought to a stop in a distance of 200 ft (≈61 m).Find (a)the braking force and (b) the time required to stop. Assuming the same braking force, find (c) the distance and(d) the time required to stop if the car were going 25 mi/h (≈40 km/h) initially.

A car moving  initially  at a speed  of 50 mi/h  (≈80  km/h)  and weighing 3000  lb (≈13,000 N) is brought   to a stop  in a distance  of 200  ft  (≈61   m).Find (a)the braking  force and (b) the  time  required to stop. Assuming the same braking  force,  find  (c) the  distance and(d) the time  required  to  stop  if the car were going  25 mi/h (≈40  km/h)  initially.

Grade:10

1 Answers

Jitender Pal
askIITians Faculty 365 Points
8 years ago
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