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an outside/net force
the frictional forces increase
In the absence of air, all objects fall with the same acceleration. That means that at the same time after the drop, all objects are moving at the same speed.
Friction occurs when two objects are in close contact. As speed increases, the two touching objects will be rubbing their particles faster against each other, causing an increase in friction.
Gravity causes falling objects to accelerate.
an outside/net force
No, it causes a huge decrease in speed.
Presence of friction, incline and so on.
the frictional forces increase
Gravity, friction, or wind drag.
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the speed just increases as more temperature molecules try to get far and thus they start vibrating by harshal satish patil.
No, the force of friction always acts in the direction opposite to that of the motions.
what causes the motion of objects
In the absence of air, all objects fall with the same acceleration. That means that at the same time after the drop, all objects are moving at the same speed.
Gravity causes all objects to accelerate at the same rate in a vacuum. In air there is air resistance which can slow some objects down eg a parachute. So, yes, in a vacuum all objects reach the same speed in the same time period.
Gravity causes falling objects to accelerate.