Question 16 A 2.9-kg cannonball is fired straight up with an initial velocity of 39 m/s. Taking the initial position of the ball as the reference level (with zero height and zero potential energy), find the potential, kinetic and mechanical energies of the ball at different heights. Neglect the air resistance. Height, in m PE, in J KE, in J E, in J h = h2 = 10 %3D h3 = 20 %3D h4 = 30 How would you describe the energy transformation while the cannon ball is moving up? Select an answer If the same cannonball is fired with the same initial speed but at an angle above the horizontal, does it change the energies you submitted in the previous question? Select an answer Question Help: Message instructor D Post to forum

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Question 16
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A 2.9-kg cannonball is fired straight up with an initial velocity of 39 m/s. Taking the initial position of the
ball as the reference level (with zero height and zero potential energy), find the potential, kinetic and
mechanical energies of the ball at different heights. Neglect the air resistance.
Height, in m
PE, in J
KE, in J
E, in J
h, = 0
%3D
h2 = 10
%3D
h3 = 20
%3D
h4 = 30
%3D
How would you describe the energy transformation while the cannon ball is moving up?
Select an answer
If the same cannonball is fired with the same initial speed but at an angle above the horizontal, does it
change the energies you submitted in the previous question? Select an answer
Question Help:
M Message instructor D Post to forum
Submit Question
Transcribed Image Text:Question 16 <> A 2.9-kg cannonball is fired straight up with an initial velocity of 39 m/s. Taking the initial position of the ball as the reference level (with zero height and zero potential energy), find the potential, kinetic and mechanical energies of the ball at different heights. Neglect the air resistance. Height, in m PE, in J KE, in J E, in J h, = 0 %3D h2 = 10 %3D h3 = 20 %3D h4 = 30 %3D How would you describe the energy transformation while the cannon ball is moving up? Select an answer If the same cannonball is fired with the same initial speed but at an angle above the horizontal, does it change the energies you submitted in the previous question? Select an answer Question Help: M Message instructor D Post to forum Submit Question
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