What is most likely the author’s motive for writing this article? to get you to buy sports products to get you to support nuclear power plants to get you to raise money for space programs to get you to appreciate the benefits of atomic research

Two carts, one of mass 2m and one of mass m, approach each other with the same speed, v. when the carts collide, they hook together. assume that positive momentum is to the right. which graph best represents the momentum of both carts over time, before and after the collision?