Answer:
Final velocity of white ball is 0m/s
Final velocity of black ball is 3.09m/s
Explanation:
An elastic collision is one that conserves internal kinetic energy
An internal kinetic energy is the sum of kinetic energies of objects in the system
Initial kinetic energy of white ball is Vi1 = 3.09m/s
Final kinetic energy of white ball is Vf1 = ?
Initial kinetic energy of black ball is Vi2 = 0m/s
Final kinetic energy of black ball is Vf2 = ?
m1 = 1.49kg mass of white ball
m2 = 1.49kg mass of black ball
The formula to calculate internal kinetic energy is
1/2m1Vf1^2 + 1/2m2Vf2^2 = 1/2m1Vi1^2
Solving the equation
1.Vf1 = (m1 - m2)Vi1/m1+m2
Vf1 = (1.49-1.49)*3.09/1.49+1/49
Vf1 = 0m/s
2. Vf2 = 2m1Vi1/m1+m2
Vf2 = 2*1.49*3.09/1.49+1.49
Vf2 = 3.09m/s
N:B following the general principle of collision when 2 bodies of same masses collide in elastic collision they exchange velocities.
