Question

A car was moving at a speed of 120km/hr on an expressway, suddenly the tyre of the car got punctured and burst. The driver of the car did not apply sudden brakes but he showed down his vehicle and finally stopped at a road side choosing the appropriate place. All the passengers in the car were shocked but glad with the driver’s decision.










What value of driver is seen in this act?​

Answer 1

Answer:

because of very high speed driver if brakes where applied the passenger would have fallen

Answer 2

Given,

Speed=20m/s,d=50m,retardation=5m/s
2


Let the ppossible reaction time be t
s
​
So the car moves 20tm And applied breaks with retardation 5m/s
2


So, the total distance under retardation is ≤50m

Thus the distance under the application of retardation =
2×5
20
2
−0
2

​
=s
′
⇒s
′
=40m

Therefore, 20t
s
​
+40≤=50⇒20t
s
​
≤50−40⇒20t
s
​
=10⇒t
s
​
≤
2
1
​
≤0.5s