question: If you tried to push a sack of feathers or a sack of hammers, both of the same volume, would it be easier to push the
choices.text: sack of feathers sack of hammers?
choices.label: A B
para: Its harder to overcome friction between heavier objects and the floor than it is between lighter objects and the floor.
para_anno.effect_prop: difficulty in overcoming friction
para_anno.cause_dir_str: heavier
para_anno.effect_dir_str: harder
para_anno.cause_dir_sign: MORE
para_anno.effect_dir_sign: MORE
para_anno.cause_prop: an objects weight
question_anno.less_effect_dir: easier
question_anno.less_effect_prop: to push
question_anno.less_cause_dir: to push