//Example 7.7
g=9.80;//Acceleration due to gravity (m/s^2)
h=20;//Magnitude of height (m)
v_a=sqrt(2*g*h);//Final speed (m/s)
printf('a.Final speed = %0.1f m/s',v_a)
v_0=5;//Initial speed (m/s)
v_b=sqrt(2*g*h +v_0^2);//Final speed (m/s)
printf('\nb.Final speed = %0.1f m/s',v_b)
//Openstax - College Physics
//Download for free at http://cnx.org/content/col11406/latest