Question

ek bus ki gati 5 sec me 40 km/ ghanta se 20 km / ghanta ghatti hai iska tawrad bataiye​

Answer 1

Answer:

initial velocity (u) = 40 km/hr  

Final velocity (v) = (40 - 20) km/hr  

Time (t) = 5 seconds

 We know v = u - at

 ⇒  20 = 40- a × 5

or

5a = 40 - 20

or a =   20/4

​ =5km/h  

 

∴Retardation = 5 km/h  

Explanation:

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