4

A 15-kg block of ice slides on a horizontal surface for 20 m

re it stops. If the initial speed of the block was 15 m/s, determine

The force of friction

between the block of

ice and the surface.

The kinetic coefficient of

friction between the block

of ice and the surface.

b.

15 kg

15 m/s

20 m

*hint: After Summing equations you will

have a function of F and a

0 m/s

(both unknown).

use

a= v dv

dx

then separate

the variables and integrate.

Remember

your integration constant

is your initial condition for the

variable you integrate with.

a is a function of v and F is

a function of x in this case.