(noun) The striking of one body against another; collision.
"Someone is sitting in the shade today because someone planted a tree a long time ago."
"Don't let your past put an impact on your future."
"Don't count the days, make the days count."
"When you want to create a big impact. Remember, a lot of small moments changed you."
"I alone cannot change the world, but I can cast a stone across the water to create many ripples."
"You never know when a moment and a few sincere words can have an impact on a life."