It is 10.20 m from the ground.
<u>Explanation:</u>
<u>Given:</u>
m = 0.5 kg
PE = 50 J
We know that the Potential energy is calculated by the formula:
where m is the is mass in kg; g is acceleration due to gravity which is 9.8 m/s and h is height in meters.
PE is the Potential Energy.
Potential Energy is the amount of energy stored when an object is stationary.
Here, if we substitute the values in the formula, we get
50 = 0.5 × 9.8 × h
50 = 4.9 × h
h = 10.20 m
In order to describe motion along a straight line, you must state the speed and direction of the motion. Those two quantities, together, comprise what's known as "velocity".
-happiness
Explanation:
- Happiness is a result of desires.
- People are known to feel happy when some of their most important desires are fulfilled.
- If desire is not important, people feel only greater or less satisfaction. But at one level, desires and happiness are excluded because when some desires are fulfilled they are extinguished, and only the feeling of happiness slowly fades.
- Happiness should not be waited passively, it should not be expected that it will come from the outside through some happy event or that other people will make us happy through great love.
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Answer:
Net work done, 
Explanation:
It is given that,
Mass of the plane, 
Acceleration of the plane, 
(upwards)
Distance covered, d = 34.3 m
We need to find the net work done on the plane as it accelerates upward. The product of force and the distance covered is equal to work done. It is given by :
W = 308700 J
or
So, the net work done on the plane is 
. Hence, this is the required solution.
