If the speed of a car is halved, how does its kinetic energy change?

Explanation

To determine how the kinetic energy of a car changes when its speed is halved, 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 speed.
...