Question

Three rocks are rolling down a hill at the same speed. Rock 1 has a mass of 1 kg; rock 2 has a mass of 1.5 kg, and rock 3 has a mass of 3 kg. Which rock has the most kinetic energy? In your answer, include: The rock that has the most kinetic energy

How you know that this rock has the most kinetic energy

Why kinetic energy is taking place and not potential energy

Answer 1

Answer:

rock 3

Explanation:

as it has greater mass and K.E is proportional to mass

as there is motion no rest so it has only kinetic energy

Answer 2

Answer:

Rock 3 of course..

Formula for kinetic energy---1/2MV²

Here V is same for all rocks

And M is greatest in Rock3

..

Hey who said there is only Kinetic energy

It depends on the height of the hill ..

We can also find potential energy by conservation of energy