Two grocery carts have the same initial total momentum. the two carts collide, and now cart b has a greater final velocity. which best describes the final total momentum of both the carts compared to the initial total momentum? a it is less if cart b has a smaller mass. b it is greater if cart b has a greater mass. c it is the same if no external forces are added. d it depends on the masses of cart a and cart b. nvm, answer is c

since two grocery carts are of same initial total momentum

They are moving on smooth horizontal floor which means there is no external force on the system

Since there is no external force on the system so here total momentum is conserved

So here we can say that total momentum of two carts will be same as the initial momentum of two carts is no force is exerted on this system

so correct answer will be given as

C) It is the same if no external forces are added.

! 55 !  

write a paragraph or story to explain the transformation between potential and kinetic energy as shown in your picture or model.  

you should have at least 5 complete sentences with a main idea and supporting details.  

you must include the following words:  

potential energy

kinetic energy

mechanical energy

conservation of energy

dude, this is hard lol : ))

need to see circuit to get time constant