17. a 25 kg block is initially at rest on a rough, horizontal surface. a horizontal force of 75 n is required to set
the block in motion, and a 60 n force is required to keep it in motion at a constant speed once it is moving.
what are the coefficients of static and kinetic friction?

the first, second, and fifth options

spectral lines lyman is one set

i will answer your question if you answer mine

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.