I've been developing this anti-hero, "Vicious," for a few weeks now- but I need some help concerning the specifics. Vicious has an ability known as "physical force generation." From any point on her body she can generate physical force. Vicious is holding a baseball in the palm of her hand. Through some pseudoscience nonsense that I haven't quite developed yet, the baseball is propelled into the air at 150 mph (241 km). This is the most basic application of her power, and the simplest method of propulsion for her.
In combat scenarios, Vicious can put an enormous amount of force behind attacks with her arms and legs. Brick, steel, and concrete either shatter or bend from her blows. Vicious can run at 70 mph (112 km) via generating moderate amounts of force from her soles. This is the fastest speed at which she can run before she loses the delicate control she has of her force output, and damages her surroundings (or throws herself up into the air- not entirely sure on this one). She can also jump large distances via pushing off of hard surfaces.
(Sidenote: this character has her limits. She is outfitted with metal bracers (essentially armor) that provides moderate protection for her legs and arms. If she goes beyond her limits, these bracers fall to pieces and she injures herself. She has a moderate healing ability that handles sprains, dislocations, and broken bones in a few days (but this is not ideal in a combat situation).)
Now that I have this power explained, how can I explain this power using comic book-y pseudoscience? What are some other applications of this power? Thank you!
EDITED to fit standards.