An 80 kg rollercoaster car traveling 10 m/s passes over the crest of a 40 m high hill as shown in the figure. the speed of the car at the bottom of the hill is 24 m/s. the mechanical energy lost to friction is most nearly?

answer: the rock sample is a sedimentary rock.

explanation:

it is given that:

mass of rock sample, m = 2.7 g

volume of rock sample,

so, density of rock sample will be

since, the density of rock sample is . hence, the rock sample is a sedimentary rock, whose densities varies between .

the closer the planet is to the sun, the larger the gravity

energy can be converted from one form to another, but it cannot be created or destroyed in ordinary chemical or physical means. do not understand what you are asking but hope this