alleryA car of mass 1000 kg moving at 36 km/h is stopped by brakes in 5 seconds. Average force exerted by brakes:
A1000 N
B2000 N
C5000 N
D10000 N
Answer & Solution
Correct answer: B. 2000 N
**Convert:** 36 km/h = 10 m/s.
Deceleration a = (0 - 10)/5 = -2 m/s².
Braking force F = ma = 1000 × 2 = 2000 N.
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