What is the hanging modifier in the following sentence and how should it be modified? --> Walking down the hallway, all the lockers were open.

As I walked down the hallway, all the lockers were open.

Explanation:

This sentence incorrectly suggests that the locker were walking down the halllway. To modify this, we need to add a subject.

onto a large boat, and mark the water level that the boat sinks to. then, take the elephant out and put a bunch of marked weights onto the boat until it reaches the same water level. add up the masses of the weights to get the weight of the elephant.

explanation:

it refers to the definition of full-contact sports, where the condition is that the sport must have athletes must "purposely collide with each other