Where is the oldest operating lighthouse on the west coast on an island in america?
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<h2>Hello!</h2>
The answer is: A. 19.3 joules
<h2>Why?</h2>Since it's an elastic collision, the kinetic energy after and before the collision will be the same.
Kinetic energy can be calculated using the following equation:
Where:
So,
First object, (going to the right):
Second object:, (going to the left):
Remember,
Hence,
The total kinetic energy after the collision will be:
The total kinetic energy after the collision is 19.3 joules (rounded to the nearest tenth)
Have a nice day!