Answer
Any force greater 490N
Explanation
The force required just to make an object slide over a rough horizontal surface is any force greater that the static friction which given by;

Given;

Hence;
F = 0.5 x 100 x 9.8
F = 490N.
We will only need the coefficient of kinetic friction if we were asked to find the force required to keep the object moving uniformly. Usually, the force needed to keep an object moving uniformly over a rough surface is lesser that which is needed to start its motion.
In this problem, we were only asked to find the minimum force required to make the object move which we have done.
Its called static friction.
Becoming Cold Blooded im pretty sure
Answer: the iris is the function of a pupil
Explanation:
<em>hey there! ;D</em>
A) aorta - goes on the top right
E) pulmonary artery - goes below aorta
D) left atrium - goes below pulmonary artery
B) left ventricle - goes below left atrium
C) right atrium - goes on top left
F) right ventricle - goes below right atrium
<em>hope this helps!</em>
<em>have an awesome day ;)</em>