Estimation

On 1p20, we did estimation and estimated various object's weight. Some of the objects was very difficult to estimate as two of the objects weigh almost the same. My partner and I was quite accurate in estimating the weigh of the object. Only two of the object we estimated was over by 1.0N. The objects' weight was affected by the gravity pull of the earth, if we were to measure the weight on the moon, the objects will be lighter by 1/6 of its weight on earth. So i think that weight is not a force and it is the result of gravity.