Acharacteristic in an experiment, such as how much food, how much space, how hot or how cold, is termed a (spelling counts, so be careful! )

Which example has gravitational potential energy? a.a horse slowing down from a run b.an apple about to fall from a tree branch c.a bicycle being pedaled down a horizontal path d.beaker sitting on the floor

Imagine that someone pushes one marble toward a motionless marble. would there still be action-reaction forces involved in the collision? how might the marbles’ motions be changed? ?

The law of the conservation of momentum says that the total momentum of any closed and isolated system cannot