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A racing car moving with conacceleration covers two successivekilometers in 30 s and 20 s respectivelyFind the acceleration of the car |
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Answer» Initial velocity = uacceleration = a 1000 = u(30) + 0.5a(30)²1000 = 30u + 450a velocity after covering 1 km = u + 30a1000= (u+30a) (20) + 0.5a (20)²1000= 20u + 800au = 35aputting the value of u in above equationso, a = 2/3 |
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