The answer is the last one
Potential energy = (mass) · (gravity) · (height)
PE = (60 kg) · (9.8 m/s²) · (10 m)
PE = (60 · 9.8 · 10) · (kg · m²/s² )
PE = 5,880 joules
Velocity=wavelength * frequency
wavelength=velocity/frequency=3*10^8/5*10^12=6*10^-5
43.3m/s that is because the cyclist will be
