physics
posted by jim on .
Atop a cliff, a projectile is fired horizontally with an initial speed of 10 m/s. Neglecting air drag, what is its speed 1 second after it is fired? A) 20 m/s.B) 14 m/s.C) 30 m/s.
D) 28 m/s.E) 10 m/s.

Vx = 10 m/s
Vy = g*t = 9.8 m/s
Speed = sqrt[10^2 + 9.8^2] = ____