Answer :
Answer:
I would say there is friction against the floor, air resistance, and gravity.
Explanation:
The contact force acting on the toy is the frictional force, and the non-contact force acting on the toy is the gravitational force.
Forces acting on the toy:
According to the question, a toy train is being pulled by a string along the floor.
The gravitational force acting on the toy train is the weight of the toy train, which is a non-contact force given by:
F = mg
where m is the mass of the toy, and g is the acceleration due to gravity.
Now, the floor will exert a normal force against the toy, equal to the weight of the toy. Let the normal force be N.
Since the toy is in contact with the floor, there is a frictional force acting against the motion of the toy trains, which is a contact force and is given by:
f = μN = μmg
where μ is the coefficient of friction between the toy and the floor.
Learn more about contact forces:
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