Application - You have two objects that you want to push the same distance (5 meters) across the floor. The objects have differe
nt masses. The first object is a dresser (40 kg) and the second object is a kitchen chair (11.5 kg). Which object will take more force to push the the 5 meters across the floor? Why?
I see you're in Middle School, so I've got a hunch that they want you to say "the dresser because it has more mass". But that's a poor answer, to a poor question.
The fact is that there's no way to tell.
The force it takes to move either object across the floor does NOT really depend on just its mass. It depends on both the object's mass AND the friction between the object and the floor. And THAT depends on the shape of the feet where they touch the floor, and what kind of material the feet and the floor are made of.
So it seems to me that we really don't have enough information to answer the question with.
But again, I suspect that the answer they want is "the dresser because it has more mass".
What is the acceleration of an object moving at a constant speed?
The Meaning of Constant Acceleration
The data table above show an object changing its velocity by 10 m/s in each consecutive second. This is referred to as a constant acceleration since the velocity is changing by a constant amount each second.
Velocity is the rate of change of position with respect to time, whereas acceleration is the rate of change of velocity. Both are vector quantities (and so also have a specified direction), but the units of velocity are meters per second while the units of acceleration are meters per second squared.
