racing car moving with constant acceleration covers two successive kilometres in 30 seconds and 20 seconds respectively find the acceleration of the car
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initial velocity = u
acceleration = a
1000 = u(30) + 0.5a(30)²
1000 = 30u + 450a
velocity after covering 1 km = u + 30a
1000= (u+30a) (20) + 0.5a (20)²
1000= 20u + 800a
u = 35a
putting the value of u in above equation
so, a = 2/3
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