Deimos, a moon of mars, is about 12 km in diameter; it has a mass of 2 x 1015 kg. with what speed would you have to throw a baseball on deimos
so that it would go into orbit and return to you so you could catch it?
5.8 m/s
4.7 m/s
2.2 m/s
3.4 m/s

V = 4.7 m/s

Explanation:

Given,

The diameter of Mar's moon, Deimos, D = 12 Km

                             Radius, R = D/ 2 = 12 /2 = 6 Km

                                                                     = 6000 m

The mass of the moon, m = 2 x 10¹⁵ Kg

in order to catch a baseball after orbiting the moon, it should be thrown with a velocity equal to the orbital velocity at that surface.

The orbital velocity at surface is given by,

                                            V = √(GM/R)  m/s

Substituting the given values in the above equation,

                                            V = √(6.673 x 10⁻¹¹ x 2 x 10¹⁵ / 6000)

                                                = 4.7 m/s

Hence, the baseball should be thrown with a velocity that would return after orbiting is, V = 4.7 m/s

with the invention of the automobile, the woman of the house could drive to the store and get groceries. women were also free to socialize more. during world war ii women were allowed to work in factories to the war effort and could drive to work or ride mass transit buses to their jobs.