friction force increases by increasing ................, the speed of the body, the length, the movement, the shape, when the speed of object decrease the friction force ............., increase, constant, decrease, ............................ slows down the moving object, newton, friction force, movement force, ground force, the friction force is always in the same direction of the object's movement, true, false, you feel warm when you rubbing your hand together due to............................, weather, no correct answer, movement force, friction force

friction force

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