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A passenger train takes 3 hours less for a journey of 360km . if its speed increased by 10km/hr from its usual speed . what is
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In covering a distance of 30km.'A' takes 2 hours more than 'B'. If 'A' doubles his speed,he would take 1 hour less than 'B' .
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Round to the nearest hundred to estimate the sum. 76 + 487 =
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Calculate the kinetic energy acquired by a 15-g nail when it is struck by a 600-g hammer moving with an initial speed of 4.1m/s .
140 + 420 = 560
100 + 500 = 600 is this correct
