Newton's first law,'cause the toy on the floor does not move until the baby applies an external force of 5 Newtons on the toy.
unbalanced forces
unbalanced force
It goes across.
intertia takes place
friction
It takes 160J/8m = 20N Newtons force to do the job.
There is no unbalanced force acting on the box.
It will have no equilibruim and when you are pushing it you are using a force
It goes across.
intertia takes place
You push against the floor; the floor pushes against you - in the opposite direction.
Kinetic Energy
friction
Kinetic Energy
Kinetic Energy
Friction is produced and kinetic energy is used
Yes, but not nesicarially equally. "In every interaction, forces always occur in pairs. For example, in walking across the floor you push against the floor, and floor pushes against you. Likewise, the tires of a car push against the road, and the road in turn pushes back in the tires. In swimming you push the water backward, and the water pushes you forward. There is a pair of forces acting in each instance. The forces in these examples depend on friction; a person or a car on ice, by contrast, may not be able to exert the action force against the ice to produce the needed reaction force." -Conceptual Physics by Paul G. Hewitt
The predicate in this sentence is across the floor. :)
Slide is already a verb. For example "to slide across the floor".