tell me your best pet and user name in your answer plz. READ p. s. i have a fly ride T rex and more! also, STAY ON THE PAGE SO I COULD RESPOND AND WE COULD PLAY! yay!!

When a book falls from a shelf to the ground without anyone pushing on it, no work is done on the book. true or false

Automobile fuel efficiency is often measured in miles that the car can be driven per gallon of fuel (mpg). heavier cars tend to have lower fuel efficiencies (lower mpg ratings). which variable (weight or fuel efficiency) is most naturally considered the explanatory (predictor) variable in this context?

What was the first instrument to ever record an earthquake?