//Example 8.2
m=0.057;//Mass of ball (kg)
v_i=0;//Initial velocity (m/s)
v_f=58;//Final velocity (m/s)
delta_p=m*(v_f-v_i);//Change in momentum (kg.m/s)
delta_t=5*10^-3;//Duration of contact of ball with racquet (s)
F_net=delta_p/delta_t;//Net external force (N)
printf('Average force exerted on the ball by the racquet = %0.1f N',F_net)
//Answer varies due to round off error
//Openstax - College Physics
//Download for free at http://cnx.org/content/col11406/latest