aryadnesanttos15 28/04/2016 16 / 3,6 = 4,44 m/s, 80 / 3,6 = 22,22.W = ΔEc.W = m . ( V² - Vo²) / 2, W = 600 . ((22,22)² - (4,44)²) / 2,W = 600 . (493,72 - 19,71) / 2, W = 300 . 474,01, W = 142,2 J.
aryadnesanttos15
16 / 3,6 = 4,44 m/s, 80 / 3,6 = 22,22.
W = ΔEc.
W = m . ( V² - Vo²) / 2, W = 600 . ((22,22)² - (4,44)²) / 2,
W = 600 . (493,72 - 19,71) / 2, W = 300 . 474,01, W = 142,2 J.