Abiker pedals hard to ride his bike to the top of a 44 m hill. he decides to let his bike coast down the hill, and is having so much fun coasting that he decided not to pedal even climbing the next hill. if that hill is 10 m high, what will the biker s speed be at the top of that hill?

connect the batteries in series and hope

the old price per ounce is c/4.

the new price per ounce is c/3.6.

the ratio of the old price to the new one is

(c/4)/(c/3.6) = (c/c)×(3.6/4) = 0.9 . . = 9/10 . . "nine tenths" in either form

conservation of mass

mass before something happens = mass afterwards