Answer:
A. The same amount
Explanation:
The acceleration at which objects free falls to the ground on Earth is constant and its value is always 
, regardless of their mass (in this problem we neglect air resistance).
So, it doesn't matter if the two rocks are different or they are launched from different heights: their acceleration will be exactly the same.
This can be proved this way: first of all, the force of gravity exerted on every object is equal to the weight of the object,
where m is the mass of the object and g the acceleration of gravity.
However, we also know for Newton's second law that
where a is the acceleration of the object.
Combining the two equations,
So, the acceleration of an object in free fall is exactly the acceleration of gravity.
The best and most correct answer among the choices provided by the question is the first choice "sodium nitrate"
<span>Sodium nitrate is the chemical compound with the formula NaNO₃. This alkali metal nitrate salt is also known as Chile saltpeter or Peru saltpeter to distinguish it from ordinary saltpeter, potassium nitrate.</span>
I hope my answer has come to your help. God bless and have a nice day ahead!
The correct answer to the question is : C)The problem is asking to solve for work; W = F × d
EXPLANATION:
As per the question, the distance covered by the object d = 29 m.
The force that acts on the object is F = 289 N.
We are asked to choose the correct equation for work done.
Work is said to be done on a body or by a body if the applied force has a component along the direction of displacement.
Mathematically work done W = force × displacement
= F × d
As per the question, we are given distance covered and applied force.
Hence, the correct equation for calculating work done by the object is equation C.
