The work that the man does is the scalar product of the force applied by the man and the horizontal displacement of the bag.
<h3>What is the work done?</h3>
In Physics, we define the work done as the product of the of force and distance. Hence, we generally define the work done as that which occurs when the force applied moves a distance in the direction of the force. This implies that the work done is not a vector but a scalar quantity.
In relation to the man and the bag, the work done is the product of the force that the man applies and the displacement of the bag. As such, the reason for the tiredness of the man is that the internal energy that he possesses is transferred to moving the bag.
Thus, the work that the man does is the scalar product of the force applied by the man and the horizontal displacement of the bag.
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The height of the flare relative to ground is 202.3 m. <em>This is the sum of height reached by the flare and the 3 m platform above the ground.</em>
<h3>
Maximum height reached by the flare</h3>
The maximum height reached by the flare is determined from the principle of conservation of energy as shown below;
P.E = K.E
mgh = ¹/₂mv²
gh = ¹/₂v²
h = (v²)/(2g)
where;
- v is the speed = 225 km/h = 62.5 m/s
h = (62.5)²/(2 x 9.8)
h = 199.3 m
<h3>Height of the flare relative to ground</h3>
H = 199.3 + 3
H = 202.3 m
Thus, the height of the flare relative to ground is 202.3 m. This is the sum of height reached by the flare and the 3 m platform above the ground.
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During the Gupta golden age, Aryabhata was known for discovering that Earth rotated on an axis.
Aryabhata was a professional at mathematics and astronomy. He calculated the value of pi, calculated the volume of a sphere and area of a triangle, characterized the model of the solar system, and many other things. While studying astronomy, Aryabhata came up with an assumption that Earth rotated on an axis while the heavens orbited around it.
Approximately 4.6 billion years ago, the solar system was a cloud of dust and gas known as a solar nebula. Gravity collapsed the material in on itself as it began to spin, forming the sun in the center of the nebula. ... Small particles drew together, bound by the force of gravity, into larger particles.