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| 1. |
a bus is moving with a velocity of 30km/h. on applying the brakes it stops at a distance of 10m. calculate the time taken to stop the bus. |
| Answer» INITIAL velocity = u = 30km/hourFinal velocity = v = 0m/sDistance Travelled = 10m━━━━━━━━━━━━━━━━Need to find:-Time taken to stop = ?━━━━━━━━━━━━━━━━Solution:- → u = 30km/hour→ u = 30 × 1000m/hour→ u = 30000 ÷ 3600 m / sec→ u = 50/6 m/sec━━━━━━━━━From 3rd equation of motion, SUBSTITUTE the VALUES,→→→→━━━━━━━━━We KNOW from 1st equation of motion:v = u + at→ →→→→→ | |