Ximena stands near the edge of a cliff 20 m above her friend Javier. If she throws a sandwich to Javier at an angle = 30 below the horizontal and it reaches him in 1.0 s, ignoring air resistance, what was the magnitude of the

Question

sandwich's initial velocity?

A. 20 m/s

B. 30 m/s

C. 5.0 m/s

D. 2.0 m/s

y = Vyot - 1/2gt^2
20 = Vsin30(1) - 1/2(-10_(1^2)
20 = Vsin30 + 5
15 = Vsin30
V = 30 m/s or B.