Question

a car increases its speed from 20 km\h to 50 km\h in 10 seconds. what is its acceleration?

Answer 1

hi

buddy ✌️✌️✌️✌️

Initial velocity = u = 20km/hr = 20 x 5/18 = 5.56 m/s

Final velocity = v = 50 km/hr = 50 x 5/18 = 13.89 m/s 

Time = t = 10 sec

Acceleration = a 

a = (v- u) / t

   = (13.89 -  5.56) / 10

   = 0.833 m/s²

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