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Q: What if your mass is 75kg. You stand on a scale in an elevator that is about to go down. Starting from rest the elevator accelerates at 2.0ms squared for 2.0s then travels at a constant speed. What do?

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The same thing happens if you are coming down in an elevator, or if you fall from any height. If you are standing still on the ground, you are subjected to gravity from the Earth which is effectively an acceleration of 1g or about 9.81 metres per second squared and you will feel your normal weight. If you fall from a height you will accelerate towards the ground at about 9.81 metres per second squared and you will feel "light" or indeed "weightless". On the downward hill of a rollercoaster, the rate of descent is enough to make you feel lighter than usual and similarly, on the upward hill of a rollercoaster the rate of ascent might be enough to make you feel heavier than usual. The design of the rollercoaster determines just how much lighter you will feel on the downward sections. You can try a neat little experiment if you take a set of ordinary bathroom scales with you into an elevator. You should observe that you "weigh more" when the elevator accelerates upwards and that you "weigh less" when the elevator accelerates downwards.

The acceleration due to gravity alone on Earth is about 9.81 meters per second-squared.

Speed = (acceleration) x (time) = 9 x 8 = 72 ft/sec

Use the following equation. F = m * a = 1000 * 60 = 60,000 N

A = F/M = 50/10 = 5 meters per second2

Related questions

F = ma, so if mass is constant, you need to double the force to double the acceleration. The answer is 20 N.

gravity

The same thing happens if you are coming down in an elevator, or if you fall from any height. If you are standing still on the ground, you are subjected to gravity from the Earth which is effectively an acceleration of 1g or about 9.81 metres per second squared and you will feel your normal weight. If you fall from a height you will accelerate towards the ground at about 9.81 metres per second squared and you will feel "light" or indeed "weightless". On the downward hill of a rollercoaster, the rate of descent is enough to make you feel lighter than usual and similarly, on the upward hill of a rollercoaster the rate of ascent might be enough to make you feel heavier than usual. The design of the rollercoaster determines just how much lighter you will feel on the downward sections. You can try a neat little experiment if you take a set of ordinary bathroom scales with you into an elevator. You should observe that you "weigh more" when the elevator accelerates upwards and that you "weigh less" when the elevator accelerates downwards.

Let k = 0 9x18 squared x 17 x 18 k is a constant. Its anti-derivative is kx + C, where C is a constant. The anti-derivative squared is (kx+ C) squared.

That's easy, if the car is initially traveling at 25 meters per second and gradually accelerates 3 meters per second for 6 seconds then the car is traveling at 43 meters per second.

newtons * meters squared / coulombs squared

The acceleration due to gravity alone on Earth is about 9.81 meters per second-squared.

E = MC squared means that Energy is equal to Mass times a Constant (which is the speed of light) squared.

You could just pull out the half: it will be (1/2) cos squared x.

Fc = mv^2/r Or Force constant = Mass X Velocity Squared Over Radius.

5 miles per second squared = 8.047 km per second squared (approx) = 8,047 ms2 So a mass of 50 kg, accelerated at 8,047 ms-2 = 402,336 Newtons.

Weight of the elevator = 1000kg x -9.8m/s2 = -9800N Upward force acting on the elevator = 1000kg x 2m/s2 = 2000N Net force = upward force - weight of elevator = 2000N - (-9800N) = 11800N