Answer:
The gravitational potential energy of the ball is more than 30 J.
Explanation:
Given that,
Gains kinetic energy = 30 J
We need to calculate the gravitational potential energy
According to law of conservation of energy
If there is no air resistance then the potential energy of the ball fully converted into kinetic energy.
If the air resistance is considered then the potential energy used to do work against air resistance.

According to question,
A ball drops some distance and gains 30 J of kinetic energy and considers air resistance then 30 J of potential energy can be loosed by the ball.
Hence, The gravitational potential energy of the ball is more than 30 J.
The answer is D. Chemical Energy
A i think but thats just my guess? maybe
Answer:
All of the above
Explanation:
The steps that should be taken for rating the results is as follows
1. Pin location checking
2. Offical website checking for the address purpose
3. The checking should be done for the closer results in the case of non-returning
Therefore all of the above steps are required and taken for rating the results
Hence, the same is to be considered
<span>The answer would be 5.
Equation = C3 H8 + O2 → Co2 + H2O
Balanced equation = </span><span>C3H8 + O2 → 3CO2 + 4H2O
</span>In the first part, left side, has 2 oxygens, and the next one has 10. So in order to turn 2 into 10, add the coefficient 5.