Two planets have the same surface gravity, but planet B has twice ...

[Lobcity]

Two planets have the same surface gravity, but planet B has twice the mass of planet A. If planet A has radius r, what is the radius of planet B?
 
  A) r B) r C) 2r D) 4r E) r/

Question 2

A soccer ball is released from rest at the top of a grassy incline. After 6.4 seconds the ball has rolled 91 m with constant acceleration, and 1.0 s later it reaches the bottom of the incline.
 
  (a) What was the ball's acceleration?
  (b) How long was the incline?

[leahm14]

Answer to Question 1

A

Answer to Question 2

a) 4.4 m/ (b) 120 m

[Lobcity]

Excellent

[nguyenhoanhat]

Thanks for the timely response, appreciate it