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+clc
+//to calculate mass, momentum,total energy,kinetic energy
+c=3*10^8 //light speed (m/s)
+v=c/sqrt (2) //velocity (m/s)
+//let mo be the rest mass of the particle 
+//relativistic mass m of the particle is m=mo/sqrt(1-(v/c)^2)
+m=1/sqrt (1-v^2/c^2) //in kg
+disp("mass m="+string(m)+" mo")
+//momentum p of the particle is p=mv
+p=m*v //in kg-m/s
+disp("momentum p="+string(p)+" mo")
+//total energy E of the particle
+E=m*c^2 //in J
+disp("energy E="+string(E)+" mo")
+//kinetic energy K=E-mo c^2
+K=E-c^2 //in J
+disp("kinetic energy K="+string(K)+" mo")
+//answer is given in terms of m0 and c in the book