Question

14. A woman is wearing seatbelt while driving at 60 Km/Hour. She find it necessary to
slam on her brakes and she slows uniformly to stop in 1.6 s. What is the average
acceleration experienced by her.
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Answer 1

Answer:

–10.4 m/sec²

Explanation:

Given U = 60 km/hr = 60 × 5/18 m/s = 50/3 m/s

t = 1.6 , v = 0

a = v-u / t = (0–50/3) / 1.6 = –50/(3×1.6) = –100/(3×3.2) = –1000/96

= –10.4 m/sec²