Author Question: On a certain planet an object of mass m is moving with an initial speed of 4 m/s. It comes to rest ... (Read 80 times)

WhattoUnderstand · **on:** Jul 29, 2018

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