Here's why:
* Kinetic Energy Formula: Kinetic energy (KE) is calculated using the formula: KE = 1/2 * mass * velocity^2
* Mass is Key: The formula clearly shows that kinetic energy is directly proportional to the mass of the object. A larger horse has a greater mass than a smaller horse.
* Equal Velocity, Different KE: Even if both horses are moving at the same speed (velocity), the larger horse will have significantly more kinetic energy due to its greater mass.
Example:
Imagine a 500kg horse and a 250kg horse both running at 10 meters per second.
* Large Horse KE: (1/2) * 500 kg * (10 m/s)^2 = 25,000 Joules
* Small Horse KE: (1/2) * 250 kg * (10 m/s)^2 = 12,500 Joules
The larger horse has twice the kinetic energy of the smaller horse, even though they are moving at the same speed.