A 10kg ball moving at 13 m/s strikes a 20kg ball at rest. What is the total kinetic energy of the two objects after an elastical collision?
We are given the velocities of the objects before the collision, so we can use them to find the total kinetic energy after the collision.
Calculate the total kinetic energy before the collision
The formula for kinetic energy is:
Where:
is the mass of the object,
is the velocity of the object.
For the 10 kg ball (moving at 13 m/s):
For the 20 kg ball (initially at rest):
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