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3 MLA Format & MLA.
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Projectile Motion Problem Set
Questions 1-15 of 15 Page 1 of 1
Question 17 points)
Round your answer to two significant figures. Round to significant figures at the very end of the problem, not at each step
A cannonball is launched off the top of a cliff with a horizontal velocity of 61.5 m/s. The cannonball lands a distance of 291
m from the base of the cliff. What is the height of the cliff? (Note: acceleration = -9.81 m/s/s)
m
Blank 1:
Question 23 points
Ensure that your answer has the correct number of significant figures. Round to significant figures at the very end of the problem.
not at each step

2.which choice most accurately explains what happens to the bonds between atoms when water changes to steam, and what becomes of the energy added during this phase change? when water changes to steam bonds between molecules are created. after reaching the boiling point, energy is used to change bond strength and change the kinetic energy of the atoms. when water changes to steam bonds between molecules break apart. after reaching the boiling point, energy is used to break bonds, but does not affect the kinetic energy of the atoms. when water changes to steam bonds between molecules are created. after reaching the boiling point, energy is used to break bonds, but does not affect the kinetic energy of the atoms. when water changes to steam bonds between molecules break apart. after reaching the boiling point, energy is used to change bond strength and change the kinetic energy of the atoms.