... Dans le syst?me MKS, g varie de 9.78 m/s 2 ? l'?quateur ? 9.83 m/s 2 aux p?les. ... sa masse m. Ceci peut ?tre ?crit . a = F/m (2) . En fait, deux choses sont ? ... Avec a en m/s 2 , m en kilogrammes (kg) et F en newton , supposons qu'il faille ...
... V 2 = (g) (R t ) = (9,81) (6 371 000) = 62 499 510 (m / sec 2 ) . V = 7905,66 m/sec = 7,90566 km/s = V o . ... Allora . (1/2) m V 1 2 = mgR t da cui . V 1 2 = 2gR t che fornisce, come si era affermato . V 1 = 1,414 V 0 . ...
... We therefore refer to it as "1 meter/second 2 " or in short "1 m/s 2 ". ... A freely falling stone accelerates at about 9.81 m/s 2 . ... It is the force which gives 1 m/s 2 to 1 kg of mass. ...
... So: m 1 = 1500 kg v 1 = 40 km/s . m2 = 4500 kg v 2 = -20 km/s . Let v 3 be the final velocity of the wreckage. ... P = m 1 v 1 + m2 v 2 = (m 1 + m2 )v 3 or . 1500*40 + 4500*(-20) = 60,000 - 90,000 = -30,000 = 6000*v . v = - 5 km/s . ...
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