xplain(in terms of newton's 2nd law)y astronauts experience xtra weight when takin off in a rocket from earth

Question

i need 2 kno really badly for an important science project. i have tried wikipedia but i cant seem to find a specific answer and i am finding trying to apply the law to the question (myself)- really hard

Answer 1

Accodring to Newton's law F=ma. This means that the resultant force is a function of mass and velocity, hence when takin off the fuel tank is full (making the take-off seem heavier).

As the rocket is in space combustion will cause the gas to be expelled and hence make it feel lighter during landing.


Hope it helps. Check out this pix:

http://exploration.grc.nasa.gov/education/rocket/Images/newton2r.gif

Answer 2

The weight of an accelerating object (..like an astronaut) is given by the equation W=M times G. 'M' is the mass of the accelerating object (..the astronaut) and 'G' is the force of gravity acting on that mass.

Standing still on Earth's surface, the value of 'G' acting on any object is about 9.81 m/sec/sec. You can find the weight of any object by multiplying its mass times 9.81.

When the object (..the astronaut) increases its speed (..like when the astronaut blasts off) the value of 'G' increases, therefore the object's weight must also increase according to the equation W=M x G

Answer 3

with acceleration there is a resistance that pushes back on what is in motion. the faster an object moves foward at a constant acceleration the force increases and it has the effect of increased weight. It is also known as the G force. It is not as dramatic but it is also present in automobiles, basicly the feeling of being pushed back in your seat when the car accelerates.

Answer 4

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Answer 5

As the spaceship moves, it affect forces onto the astronauts, and the astronauts affect forces onto the air above them which creates the reactive forces (pressure) on the astronauts. As a result, they;ll be heavier.