Answer:
rock 3
Explanation:
Rock 3 has the greatest kinetic energy because it has the most mass.
Kinetic energy is the energy due to the motion of a body.
Given mass:
Rock 1 = 1kg
Rock 2 = 1.5kg
Rock 3 = 3kg
Now, to calculate kinetic energy;
K.E = [tex]\frac{1}{2}[/tex] m v²
where m is the mass
v is the velocity
As we can see, kinetic energy is directly proportional to mass.
The higher the mass, the higher the kinetic energy.
