Physics, 23.02.2021 18:30 markthecow
În figura alăturată este redată dependenţa de timp a vitezei unei mingi cu
masa m = 0,1kg , care cade de la o înălţime h .
a. Determinaţi acceleraţia mingii.
b. Determinaţi forţa de rezistenţă la înaintare întâmpinată de minge.
c. Determinaţi distanţa parcursă de minge între momentele 0,5s şi 1,5s .
d. Presupunând că forţa de rezistenţă se poate exprima prin relaţia F k v r = ⋅ , unde k = 0,05 N ⋅ s / m ,
determinaţi valoarea vitezei mingii începând de la care căderea acesteia ar avea loc cu acceleraţie nulă.
Answers: 3
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În figura alăturată este redată dependenţa de timp a vitezei unei mingi cu
masa m = 0,1kg , care ca...
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