the metric unit of force and weight is a: newton
Weight is force. The metric unit of force is the Newton.
The basic metric unit for weight is the newton.
Because a pencil has a mass of a few grams.
Centimetre
An appropriate metric unit of mass for a pencil would be grams.
What is the metric unit of a orange? What is the metric unit of a pencil? What iw the customary unit amount of water a bathtub will hold?
the metric unit of force and weight is a: newton
Weight is force. The metric unit of force is the Newton.
The basic metric unit for weight is the newton.
centimeter
Any metric unit would do. But it might be easier to pick something smaller than the length of the pencil, like a centimeter, or a millimeter.
Because a pencil has a mass of a few grams.
Nothing can 'weigh' two grams, because the gram is not a unit of weight (it is the metric unit of mass). However, two grams would likely weigh something close to the weight of a pencil.
The metric unit for an elephant's weight is typically measured in kilograms (kg).
Centimetre
You can use millimeters.