If the small and big stones are dropped from the roof of a house simultaneously, both stones will reach the ground at the same time due to the effect of gravity.
No matter how much is the mass of an object the gravity will attract it to the earth center with an acceleration of 32,17 ft/s2
<h3>What is gravity?</h3>
In physics, gravity is the force of attraction that the earth exerts on all bodies possessing mass by pulling them toward its center.
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Explanation:
m = kg. v=m/s. g=m/s^2. h= m
>>1/2mv^2=mgh
>>1/2mv^2=mgh>> kg*(m/s)^2= kg*m/s^2*m
>>1/2mv^2=mgh>> kg*(m/s)^2= kg*m/s^2*m>>kg m^2/s^2=kg m^2/s^2 the fraction 1/2 won't be able to make any changes to to the dimensional expression of energy i.e half of energy is still energy therefore you can neglect the number .
<u>>>kg m^2/s^2=kg m^2/s^2</u><u> </u>
<u>></u><u>></u><u>J</u>= J
Answer:
The speed of this particle is constantly .
Explanation:
Position vector of this particle at time :
.
Write as a column vector to distinguish between the components:
.
Both and are constants. Therefore, and would also be constants with respect to . Hence, and .
Differentiate (component-wise) with respect to time to find the velocity vector of this particle at time :
.
The speed (a scalar) of a particle is the magnitude of its velocity :
.
Therefore, the speed of this particle is constantly (a constant.)
The appropriate answer is 4. The formation of Mid-Ocean ridges. There are two types of divergent margins: continental separation and oceanic floor spreading. Where the sea floor separates magma upwells and new oceanic crust is formed. Mid ocean ridges are home to hydrothermal vents. These support a unique ecosystem of marine organisms. The Mid- Atlantic Ridge where the African and Eurasian plates separate from the North and South American plates.