On a certain planet an object of mass m is moving with an initial ...

[WhattoUnderstand]

On a certain planet an object of mass m is moving with an initial speed of 4 m/s. It comes to rest after traveling a horizontal distance of 10 m.
 
  If the coefficient of kinetic friction between the object and the surface is 0.2, what is the value of g on that planet?
  A) 4 m/s2
  B) 6 m/s2
  C) 8 m/s2
  D) 10 m/s2
  E) 12 m/s2

Question 2

An object of mass m with a certain initial speed on a horizontal surface comes to rest after traveling a distance of 10 m.
 
  If the coefficient of kinetic friction between the object and the horizontal surface is 0.20, what is the initial speed of the object? Use g = 10 m/s2.
  A) 9.8 m/s
  B) 6.3 m/s
  C) 3.6 m/s
  D) 7.2 m/s
  E) 8.9 m/s

[wfdfwc23]

Answer to Question 1

A

Answer to Question 2

B

[WhattoUnderstand]

Gracias!

[fatboyy09]

Thanks for the timely response, appreciate it