Two objects have a mass ratio of 5:2, and their momentum ratio is 5:4. What is the ratio of their kinetic energies?
We are given that the mass ratio of two objects is and their momentum ratio is . We need to find the ratio of their kinetic energies.
Recall the formula for kinetic energy and momentum
The kinetic energy of an object is given by:
The momentum of an object is given by:
Express the momentum ratio
We are given the momentum ratio:
Substitute the formula for momentum into this ratio:
Substitute the mass ratio Click "Show Answer" to reveal the answer and analysis
Click "Show Answer" to reveal the answer and analysis
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