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What is the maximum velocity of a man weighing 90kg if the man could fall forever?
Wiki User
∙ 11y ago
-- Imagine that the only things in the universe are the man and the Earth,
so that there are no other bodies to pull him off of a straight course toward
the Earth.
-- Now imagine that he is infinitely far from Earth, you drop him from there, and
the Earth's gravity pulls him all the way down to Earth. At every step of the way,
he goes faster and faster, because there's a steady gravitational force on him that's
accelerating him, and also because the force keeps increasing as he gets closer to
the Earth. So even his acceleration is growing.
-- When he finally hits the Earth, with a small 'splat' like Wile E. Coyote, he's falling
at 11.2 kilometers per second (6.96 miles per second).
-- It makes no difference how much mass he has, or how much he weighs when he
gets here. If the man, his rotund mother-in-law, a small stone, and his car were all
'dropped' at the same instant from infinity, they would all splat at the same time and
at the same speed.
Wiki User
∙ 11y ago
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What is the difference between optimum velocity and maximum velocity?
Maximum velocity is the fastest an intem can go, while optimum velocity is the "best" speed it can travel on. For a car optimum velocity could mean either where you get the best MPG, or where you can go round corners/over bumps without the car starting swaying, or something like that.
What is the nature of velocity time graph of a body moving with uniform retardation?
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If a car drove a around in a circle would that be constant velocity?
No. Velocity is a 'vector', which means it's a measurement that has both magnitude and direction. The magnitude is what we usually call the 'speed'. For an object moving in a circle, it could have constant speed ... the velocity could have constant magnitude ... but there's no way the whole velocity vector could be constant, because the direction is always changing. Constant velocity is very easy to recognize ... the object is moving at a steady speed, in a straight line.
What is the difference between optimum velocity and maximum velocity?
Maximum velocity is the fastest an intem can go, while optimum velocity is the "best" speed it can travel on. For a car optimum velocity could mean either where you get the best MPG, or where you can go round corners/over bumps without the car starting swaying, or something like that.
What is the nature of velocity time graph of a body moving with uniform retardation?
A body moving at a uniform speed may have a uniform velocity, or its velocity could be changing. How could that be? Let's look. The difference between speed and velocity is that velocity is speed.
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