de Broglie wavelength (λ):
h = Planck's constant (6.626 × 10–34 kg • m2/s)
m = mass (in kg)
v = velocity (in m/s).
mass = 155 g velocity = 32.5 m/s
m = 0.155 kg
How to calculate the wavelength of a baseball (m = 155 g) moving at 32.5 m/s?