here’s a try:

1.this ques works under the assumption that since the planet has the same mass as the earth,the value of g will be same(I hope u know what g is)= 9.8 m/s^2=rate at which it falls

2.so, initial speed of body = 0 m/s (as it is dropped from rest) ,t = 6s and we want to find out v(the final velocity) and S(the distance)

so applying distance equation

S= ut + 1/2gt^2

= 0 X 6 + 1/2 (9.8) (6)(6)

= 4.9 X 36

= 176.4 m

also, v^2 – u^2 =2gS

v^2 – 0^2 = 2(9.8)(176.4)

v^2 = 864.36

so v(final velocity) is approximately equal to 29.4 m/s

3)

average velocity = (u+v)/2

= (0 + 29.4)/2

= 14.7 m/s

PS I think that there is a catch in the question. You see , the value of g on that planet =

GM/R^2

also, value of g on earth = GM/R’^2

now it is given that mass of both planets are same, so the numerators become equal, but u see , there is no info about the radius of that planet. So , we cannot be absolutely sure that value of g on that planet = value of g on earth.

Hope this helps

international warming on the earth has little or no result on different planets interior the photograph voltaic gadget. there isn’t any super planet close to to adequate to Earth to fall on it. If there have been, it could have been viewed 1000’s of years in the past. dissimilar the tale is only by a stupid woman interior america of a who claims she is in psychological touch with extraterrestrial beings. She first claimed that a planet X or “Niburu” could reason a disaster on the earth in 2003 in spite of the indisputable fact that it did now not take place. So whilst the tale got here out that a calendar arranged via the previous Mayan civilisation in significant u.s. got here to an bring about 2012, she stated that it may be 2012 that this planet is going to fall. a number of her unique followers have already desperate she is a pretend or is loopy. NASA and astronomers do now not subject themselves with liars and loopy human beings.

same mass = same gravitational

9.8 m/s^2

velocity-58.8m/s

average-9.8m/s