Which best describes the projectile motion of the marble as it leaves the table at the two different speeds? a. the marble’s horizontal and vertical velocities change. b. the marble’s horizontal and vertical velocities remain the same. c. the marble’s vertical velocity changes, but its horizontal velocity does not. d. the marble’s horizontal velocity changes, but its vertical velocity does not.

the answer is C :) so there you go

answer: 802.3 kilo joules of energy represents 191.75 kilo calorie of energy.

explanation:

energy released during combustion of one mole methane = 802.3 kilo joules

if 1 kilo joule = 0.239006   kilo calorie

then ,802.3 kilo joule will be = 802.30.239006 kilo calorie

802.3 kilo joule = 191.75 kilo calorie

hence, the energy in kilo calorie is 191.75 kilo calorie.

that tool is called an altimeter which measures your altitude which can be used to tell which atmosphere you are currently in, including the stratosphere.

hope this ! : )