Newton taught us: Force = (mass) x (acceleration)
Divide each side by (mass) : Acceleration = (force) / (mass) .
The only problem here is: This formula applies when the "Force" is the
only force on the object. When the objects in these school problems are
falling out of airplanes, shot from guns, or being hit by baseball bats, we
routinely ignore the force of air resistance against the object. We're
comfortable with that, maybe because it's become a habit. But now,
we're not so comfortable about ignoring the force of water resistance.
All I can tell you is that if you DO ignore the water resistance, that is,
if the water were not there, her acceleration would be
(250 newtons) / (70 kg) = 3.57 m/s² = about 0.36 g .
But what is it really, in the water ?
If you've spent any substantial amount of time anywhere near competitive
swimmers, then you know that it depends on their position coming off the
wall, what they do with their knees and knuckles, how straight they hold
their body, how deep the texture of their swim-cap is, and how well they've
shaved their legs.
In this problem, you are asked to find a vertical position of a ball when you are given its initial position on a spring. In both locations, the speed of the ball is zero.
If non-conservative forces are either known or small and if energy is converted from one form to another between the locations, then any time you relate speed and position of an object at two different points, conservation of energy is the most direct way to understand the problem.
In this case, you start out with stored energy in the compression of the spring and convert it to stored gravitational energy.
1: copper is a good conductor
most metals tend to be good conductors because it is easy for electron currents to flow through them
Hello,
Here is your answer:
The proper answer to this question is option D "<span>centrifugal".</span>
The force centrifugal is the force that holds the moon with the Earth and the centrifugal force is two times stronger with the Earth and the sun.
Your answer is D.
If you need anymore help feel free to ask me!'
Hope this helps!
Explanation:
Mass and energy are closely related. Due to mass–energy equivalence, any object that has mass when stationary (called rest mass) also has an equivalent amount of energy whose form is called rest energy, and any additional energy (of any form) acquired by the object above that rest energy will increase the object's total mass just as it increases its total energy. For example, after heating an object, its increase in energy could be measured as a small increase in mass, with a sensitive enough scale.
