Your friends sit in a sled in the snow. if you apply a force pf 75 n to them, they have an acceleration of 0.9 m/s ^ 2. what is their mass?

Mass of the sled in the snow 83.33 kg.

Explanation:

Given that,  

Force applied to move the sled in the snow (F) = 75N

We know that

Newton's second law of motion is  

F = ma (Or "force" is equal to "mass" times "acceleration".)

So if we move this around we can isolate mass and get mass

M = 83.33 kg

Mass of the sled in the snow 83.33 kg.