Two bicycle tires are set rolling with the same initial speed of 3.90 m/s along a long, straight road, and the distance each travels before its speed is reduced by half is measured. one tire is inflated to a pressure of 40 psi and goes a distance of 18.6 m ; the other is at 105 psi and goes a distance of 93.1 m . assume that the net horizontal force is due to rolling friction only and take the free-fall acceleration to be g = 9.80 m/s2 . what is the coefficient of rolling friction (uk) for the tire under low pressure?

0.03129

Explanation:

= Coefficient of rolling friction

g = Acceleration due to gravity = 9.8 m/s²

Initial speed of both the bicycles is

u = 3.9 m/s

Final velocity

a = Acceleration =

Equation of motion

The coefficient of rolling friction for the tire under low pressure is 0.03129

an ion is a charged atom or molecule. it is charged because the number of electrons do not equal the number of protons in the atom or molecule. an atom can acquire a positive charge or a negative charge depending on whether the number of electrons in an atom is greater or less then the number of protons in the atom.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.