query: Why do heavier objects roll faster down a hill?
positive_passages.docid: 151973
positive_passages.text: Why do heavier objects fall faster on hills but not in straight drops?
negative_passages.docid: 109172
negative_passages.text: The direction of frictional force in smooth rolling motion
negative_passages.docid: 48979
negative_passages.text: Work done by gravity on falling object does not seem to equal change in mechanical energy
negative_passages.docid: 78649
negative_passages.text: Why do cars gain lift while going at a high speed?
negative_passages.docid: 101257
negative_passages.text: Intuitive understanding of centripetal vs. centrifugal force
negative_passages.docid: 76208
negative_passages.text: Is a hard drive heavier when it is full?
negative_passages.docid: 114225
negative_passages.text: If movement is relative, why is it said that moving objects have kinetic energy?
negative_passages.docid: 80207
negative_passages.text: Are moving objects producing stronger gravity fields?
negative_passages.docid: 1721
negative_passages.text: How to explain the force applied on this object?
negative_passages.docid: 97770
negative_passages.text: Sphere rolling up a step
negative_passages.docid: 73673
negative_passages.text: What is gravity and what causes objects to act against it?
negative_passages.docid: 130347
negative_passages.text: Why do objects with different masses fall at the same rate?
negative_passages.docid: 45613
negative_passages.text: Conservation of energy when slowing an object down
negative_passages.docid: 29290
negative_passages.text: Why is there a controversy on whether mass increases with speed?
negative_passages.docid: 2331
negative_passages.text: How fast does gravity propagate?
negative_passages.docid: 50902
negative_passages.text: The secret behind the spinning, asymmetrically weighted, 2D disk-shaped top?
negative_passages.docid: 154036
negative_passages.text: Does rolling friction increase speed of a wheel?