Barney walks at a velocity of 1.7 meters/second on an inclined plane, which has an angle of 18.5° with the ground. What is the horizontal component of Barney’s velocity?
the velocities and the speed build a triangle, where the 1.7 m/s are the hypotenuse and the x-velocity and y-velocity are the other sides.
So the x-velocity is: speedcos(angle)
now plug in
x=1.7 m/s cos(18.5)=1.597 m/s