Determine the mass of a ball with a velocity of 35.0 m/s and a wavelength of 8.92 x 10-34 m.

m = mass of the ball = ?

v = velocity of the ball = 35 m/s

λ = wavelength of the ball = 8.92 x 10⁻³⁴ m

h = plank's constant = 6.63 x 10⁻³⁴ J-sec

according to Debroglie principle, wavelength is given as

λ = h / (mv)

inserting the values

8.92 x 10⁻³⁴ = (6.63 x 10⁻³⁴) / (m (35))

m = (6.63 x 10⁻³⁴) / ((8.92 x 10⁻³⁴) (35))

m = 6.63 / (8.92 x 35)

m = 0.0212 kg

So the mass of the ball comes out to be 0.0212 kg