In which of the following cases would you feel weightless?
a) while walking on the moon
b) while falling from an airplane with your parachute open
c) while traveling through space in an accelerating rocket
d) while falling from a roof

A

Explanation:

Because of the absence of gravitational force in outer space.

fgravity=10x10=100n case 1

fgravity=30x20=600n case 2

6 times more

98.4 m

explanation:

let s = distance up the plane  

then by conservation of energy  

1/2m(18.3)^2 = mg s sin(10)  

(18.3)^2 = 2g s sin(10)  

s = (18.3)^2/2gsin(10)  

= 98.39564526  

= 98.4 m