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+//Example 7.8

+k=250;//Force constant of spring (N/m)

+m=0.100;//Mass of car (kg)

+x_i=0.0400;//Initial compression of the sping (m)

+v_f_a=sqrt(k/m)*x_i;//Final velocity (m/s)

+printf('a.Final speed (before the start of the slope) = %0.2f m/s',v_f_a)

+h_f=0.180;//Final height (m)

+v_f_b=sqrt((k*x_i^2/m)-(2*g*h_f));//Final velocity (m/s)

+printf('\nb.Final speed (at the top of the slope) = %0.3f m/s',v_f_b)

+//Openstax - College Physics

+//Download for free at http://cnx.org/content/col11406/latest