A runner moves 2.88 m/s north. She accelerates at 0.35m/s² at a −52.0∘ angle. At the point in the motion where she is running directly east, what is her displacement in the x-direction?
a) 0 m/s
b) 2.36 m/s
c) 1.91 m/s
d) -1.91 m/s