what is the gravitational field strength of mars measured at a position 400 km above its surface? mars has a mass of 6.39x10^23 kg and a radius of 3390 km.

G=GM/r^2

G=(6.67×10^-11)(6.39×10^23)/(3390000+400000)^2

G=(6.67×10^-11)(6.39×10^23)/(3790000)^2

G=2.967 m/s^2

Explanation:

c because the action was the roller coaster reaches bottom of hill (action) reaction would be blood tends to drain away from head

hope this !

massxgravity x heght=weightxheight= pe

4900=490xh

h=10