Will someone help me answer 6 potential and kinetic energy.?

Question

1. What is the potential energy of a rock that weighs 100 newtons that is sitting on top of a hill 300 meters high?
2. What is the kinetic energy of a bicycle with a mass of 14 kg traveling at a velocity of 13 m/s?
3. A flower pot weighing 3 newtons is sitting on a windowsill 30 meters from the ground. Is the energy of the flower pot potential or kinetic? How many joules is this?
4. When the flower pot in problem 3 is only 10 meters from the ground, what is its potential energy?
5. How much of the total energy in Problems 3 and 4 has been transformed to kinetic energy?
6. A 1200 kg automobile is traveling at a velocity of 100 m/s. IS its energy potential or kinetic? How much energy does it possess?

Answer 1

Kinetic energy is due to velocity and mass.
KE = (1/2)*m*v^2

Potential energy is due to the height above some reference level and the weight. It has the potential to be converted to some other kind of energy if it is lowered to the reference level. In other words: if the flower pot falls off the windowsill, its potential energy will be converted to kinetic as its speed increases and there will be enough KE to smash the pot.
U = m*g*h = w*h

Answer 2

The statement of question 2 answers the first part of question 6.

These problems are what I call 'plug and chug'. You just need to use the appropriate equations and calculate.