Question

What is the de Broglie wavelength of a 0.002 kg table-tennis ball moving at 4.32 m/s? (h = 6.626 x 10-34 J·s) 2.98 x 10-32 m 7.67 x 10-32 m 8.77 x 10-32 m 3.31 x 10-32 m