Maisie drags a 1kg mass along a table with a newton meter so that it accelerates at 0.25 m/s. the newton-meter reads 0.4n, calculate the force of friction between the mass and the table

Applying one newton of force to an object of 1 kg accelerates it by 1 meter per second

maisie applied .4 newtons to the block, so it should be accelerating at .4 m/s
but it actually accelerated at .25 m/s or .25 newtons reached the block

the difference in force applied and force received is .15, which is the force of friction because that's how much force it stopped from reaching the block
force of friction is .15 newtons

Iwas going to ask that quesytion  sorry dude i dont  know : (    : /