pushes and ......, pulls, gravity, force, what is mass measured in , force, newtons, friction, what are forces measured in, weightmeter, frictionmeter, forcemeter, when two surfaces rub against one another what is it, force , friction, gravity, when things move in the air it is sometimes called , drag, magnet, force, Forces can affect objects by changing what?, the force of the object, the weight of the object, the speed of the object, which two poles are on a magnet , N and S, E and W, SW and NE, which phrase is used to attract or repel on a magnet, like poles repel; unlike poles attract, like poles attract; like poles repel, unlike poles attract; like poles repel, on a magnet there is a field around it.What is it called, a magnetic material field , a magnetic field, a iron field, when an aeroplane is unbalanced what is it doing, landing, take off, in the air.

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