Answer:
What can you catch but not throw?
I am the second L in LOL.
Physicists have built devices to move me very fast. My last seven letters can be commonly found in newspapers magazines and journals.
I am what bring things together. Without me everything you see would be a total mass or debris everywhere.
What is easy to get into, but hard to get out of?
Lynn likes grapes but not potatoes. She likes squash but not lettuce, and she likes peas but not onions. Following the same rule, will she like pumpkins or apples?