The fastest server in the women’s game is Venus Williams of the United States of America, who recorded a serve of 205 km/hr during a match in Switzerland in 1998. Calculate the ball’s momentum if it has a mass of 58 g.

 Given data here are,

velocity , v= 205 km/ hr = 205 x 1000/ 3600 m/s

v = 2050/36 m/s = 56.94 m/s 

mass, m = 58g = 0.058kg

therefore momentum p is

p = m x v

p = 0.058 x 56.94 

p = 3.3025 kgm/s