Question

You got your 100 kg sofa on its frictionless casters and moving horizontally across the floor at 3 m/s. If no one messes with it (no horizontal forces applied, no mass added or removed) the sofa will (neglecting drag)

Group of answer choices

speed up and create havoc.

continue sliding across the floor at 3 m/s until it crashes into the wall or something.

gradually slow down and come to a rest.

Answer 1

Here there is no external force acting on it i.e neither frictional force (because surface is frictionless ) , nor any applied force .

So, from Newtons first law of motion , which states tha " if a body is in rest or is in uniform motion will remain in rest or continue its uniform motion until and unless an external force is applied on it to change its stae of rest or uniform motion".

Therefore , the sofa will continue sliding across the floor at 3 m/s until it crashes into the wall or something.