thats because only you can feel your feelings ...for example if you fall down and get hurt it will hurt you but it won't hurt me,coz you are the one who got hurt and just like that your teacher won't feel and see the effect of earth's gravitational force on you but she will feel and see earth's gravitational force on her.(your question is a little dumb)
yes
9.8 N/kg
it was invented by the earths gravitational feild
is 20x earths
No the Earth would pull u more than the moon
The moon is small.
Yes, that's basically what causes tides. ===================== And the moon. Lets not forget its role.
Gravitational force depends only on an object's mass and its distance from the center of the earth. Its speed has no effect on the gravitational force.
Yes.
The larger the mass of either object, the greater the gravitational force.
Gravitational Force is an effect produced by Mass. We can simulate a similar effect by whirling in a centrifuge, but though the magnitude of the force may be similar, the cause is quite different.
The effect of dubling the massesa and halving the distance is to increase the gravitational force by a factor of 16.