A car is running at a speed of 15 km `h^(-1)` while another Similar car is moving at a speed of 45 km `h^(-1)` . Find the ratio of their kinetic energies.

Explanation

To find the ratio of the kinetic energies of two cars moving at different speeds, we can follow these steps:

### Step 1: Understand the formula for kinetic energy
The kinetic energy (KE) of an object is given by the formula:
\[ KE = \frac{1}{2} m v^2 \]
where \( m \) is the mass of the object and \( v \) is its velocity.
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