A bus starting from rest acquires a velocity of 56 km/h in 10 sec. Find (a) the acceleration, (b) the distance travelled.

1 thought on “A bus starting from rest acquires a velocity of 56 km/h in 10 sec. Find (a) the acceleration, (b) the distance travelled.”

1. Here ,

   As the car is starting from rest ,

   Initial velocity = u = 0 m/s

   Final velocity = v = 56 km/hr

   To convert km/hr to m/s , we multiply it by 5/18

   Final velocity = v = 56 km/hr = 56 x 5/18

   = 15 m/s

   Time = t = 10 sec

   a = acceleration

   Equation of motion :

   v = u + at

   15 = 0 + 10a

   a = 15/10 = 1.5m/s²

   s = distance traveled

   Equation of motion :

   s = ut + 1/2 at²

   =0 x 10 + 1/2 * 1.5 *10^2

   =10 + 75

   s = 85

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