At T = 0, a Particle Leaves the Origin with a Velocity

Multiple Choice

At t = 0, a particle leaves the origin with a velocity of 9.0 m/s in the positive y direction and moves in the xy plane with a constant acceleration of (2.0i − 4.0j) m/s². At the instant the x coordinate of the particle is 15 m, what is the speed of the particle?

A) 10 m/s
B) 16 m/s
C) 12 m/s
D) 14 m/s
E) 26 m/s