8th Grade Physics Term 1 Test 2
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34 Terms
It It always affect both objects. Any time movement of an object that is changing, there is an interaction .Interaction can cause changes in the shape of an object
contact interaction and interaction at a distance
friction, push/pull ( tension, elastic force ), normal force, drag, buoyancy, rolling resistance
gravity, electromagnetic
Gravity, electromagnetic, strong interaction, weak interaction
if two different objects have different masses, they still exert forces of equal magnitude on each other
gravity, electromagnetic
weak interaction, strong interaction
It is mathematical abstraction that shows the combined effect of all (relevant) forces affecting an object
when one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction of the first body
Fpush
Fthrust
Fpull
Fgravity
Fnormal
Ffriction
Fdrag
Frolling resistance
it is created as the result of a force pushing on a rigid surface is called the Normal Force. Normal Force is equal to the force applied (NIII).The Normal Force is called normal because it is at 90o to the surface (Mathematical normal).
It is one of the fundamental interactions. It is an interaction at a distance. It is the main interaction from the planetary scale upwards. As far as we know, it is only in a attractive direction
weight is a force of gravity. It depends on the mass and distance (more mass -more weight ,more distance-less weight) and the unit is newton(with a capital N)
it is that gravity pulls all objects down at the same acceleration. Probably just a thought experiment, also done earlier by the Dutch
Mass doesn't pull other masses, they bend space-time.Observable with bending of light(Massless)
(kenetic )friction, rolling resistance and drag
it means that the harder surfaces are pushed together, the more friction there is .If surfaces are allowed to settle, they will mesh more .
it presents the effect of the characteristics of the surfaces and is determined experimentally for material pairings .It is the ratio to the normal force .