A 500-kg elevator is pulled upward with a constant force of 5500 N for a distance of 30.0 m. What is the net work done on the elevator

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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?

Why is the use of carbon-14 limited