A BMX bicycle rider takes off from a ramp at a point 2.4 m above the ground. The ramp is angled at 40∘from the horizontal, and the rider's speed is 7.1 m/s when he leaves the ramp.

At what horizontal distance from the end of the ramp does he land?

Express your answer with the appropriate units.

x f = ______ (value) _____ (units)