Navigation is the art of measuring distances in order to be able to get from one place to another
It is C because less than one percent of water is fresh water
If it is a matter of which way you are going you could lean forward. It would help to put all the weight opposite of where you are falling.
Answer:
1/2 M V^2 = .1 M g H where 10% of PE goes into KE
V^2 = .2 g H = .2 * 9.8 * (2100 - 1600) = 980 m^2 / s^2
V = 31.1 m/s increase in speed during descent
1 km / hr = 1000 m / 3600 sec = .278 m/s
V = 31.1 m/s / (.278 m/s / km /hr)= 112 km/hr
Jupiter ............................................
