Xander's friend Corey has a skateboard that he rides at Newton's Skate Park. The combined mass of Corey and his
skateboard is 60 kg. At the top of his jump, the net force acting
on him is 30 Newtons. What is his acceleration at that moment?

I’d have to say no because without oxygen in the water the fish would all be dead. so if you want to fish for dead fish, pick the ponds with the lowest oxygen concentrations.

Aphysical change is one that you can put in and remove like a ham sandwich. the stuff you put in there can be changem its not permanet. a chemical change is on that can't be change thats permanet. like when you make a cake and bake it. you can't get those ingredients back.