Physics, asked by ujjwal5210, 11 months ago

racing car moving with constant acceleration covers two successive kilometres in 30 seconds and 20 seconds respectively find the acceleration of the car






Answers

Answered by Sukhpreet85
6

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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