Question

Cart 1 with mass 10.0 kg travels with a velocity of 5.00 m/s and collides with an identical cart. If the collision between the two carts is elastic what is the kinetic energy of the system after the collision

Answer 1

Answer:

125 Joules

Explanation:

In an elastic motion, the net kinetic energy of the system is conserved i.e the total kinetic energy of the system after the collision is equal to the total kinetic energy of the system before collision;

Kinetic Energy = 1/2 m*v^2

Total Kinetic energy = Kinetic Energy(Cart 1) + Kinetic energy(Cart 2);

Total K.E = 0.5*(10)*(5)^2 + 0 = 125 Joules;

Energy after collision = Energy before collision = 125 joules