A Projectile Fired from a Gun Has Initial Horizontal and Vertical

Multiple Choice

A projectile fired from a gun has initial horizontal and vertical components of velocity equal to 30 m/s and 40 m/s, respectively.
-Determine the initial speed of the projectile.

A) 40 m/s
B) 50 m/s
C) 60 m/s
D) 70 m/s
E) 80 m/s