Resposta :
Vx = V * Cos(teta)
Vx = 40V3 * Cos 30°
Vx = 40V3 * V3/2
Vx = 40 * (V3)² / 2
Vx = 40 * 3 / 2
Vx = 20 * 3
Vx = 60m/s
Vx = 40V3 * Cos 30°
Vx = 40V3 * V3/2
Vx = 40 * (V3)² / 2
Vx = 40 * 3 / 2
Vx = 20 * 3
Vx = 60m/s