Respuesta :
F=m.a
80 = 20.a
4m/s² =a
Vf² - Vo² = 2ad
Vf² =2(4)(15)
a)
Ec = (1/2)mV² = (1/2)(20kg)(120) = 1200 J Rpta
b)
Vf = √120 ≈ 10,95 m/s
80 = 20.a
4m/s² =a
Vf² - Vo² = 2ad
Vf² =2(4)(15)
a)
Ec = (1/2)mV² = (1/2)(20kg)(120) = 1200 J Rpta
b)
Vf = √120 ≈ 10,95 m/s