Problem 7.38 Assume that the maximum horizontal distance you can throw a basebal (m-0.145 kg) at an angle of - 45 above the horizontal is 25 m • Part A What is the kinetic energy of the basebal just after it leaves hand? ignore air resistance and the small distance the bal is above the ground when it leaves your hand. Take the zero of potential energy to be at the ground. Exprese your anewer with the appropriate units. O IE ? Value Units Submit • Part B A the ball's maximum height, what fraction of its total mechanical energy is kinetic energy and what fraction is gravitational potential enengy? Enter your answera numerically separated by a comma. O IE K/E. U,/E - Submit sunstAnser • Part C f you throw the basebal at an initial angle of 60 above the horizontal, at its maximum height what fraction of its total energy is kinetic energy and what fraction is gravitational potential energy? Enter your anewera numertcally separated by a comma. O IB K/E U,/E• Submit Aecunst Anewer • Part D What fraction of the total mechanical enengy is kinetic energy at the maximum height in the limiting cases of a0 and as0 Enter your answera numerically separated by a comma. K/E,-r. K/E,- Submit nstanser

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Chapter1: Units, Trigonometry. And Vectors
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Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...
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what's the answer of part a , b ,c and d

Problem 7.38
Assume that the maximum horizontal distance you
can throw a baseball (TM = 0.145 kg) at an angle of
m = 45° above the harizantal is 25 m.
• Part A
What is the kinetic energy of the baseball just after it leaves your hand? Ignare air resistance and the small distance the ball is above the ground when it leaves your hand. Take the zero of potential energy to be at the ground.
Exprese your anewer with the approprlate units.
Value
Units
K-
Submit
Requect Ancwer
• Part B
At the ball's maximum height, what fraction of its total mechanical energy is kinetic energy and what fraction is gravitational potential energy?
Enter your anewers numerically eeparated by a comma.
VO AZO
O IE ?
K/E, U,/E
=
Submit
Request Ancwer
• Part C
If yau throw the baseball at an initial angle of 60° abave the horizontal, at its maximum height what fraction of its total energy is kinetic energy and what fraction is gravitational potential energy?
Enter your anewers numerically aeparated by a comma.
VO TALO
+ O (9 ?
K/E. U/E-
Submit
Requect Ancwer
• Part D
What fraction of the tatal mechanical energy is kinetic energy at the maximum height in the limiting cases of ag = 0° and ag = 90°?
Enter your anewere numerically separated by a comma.
VO TALO
O IE
?
K/Em - . K/E - 0
Submit
Request Ancwer
Transcribed Image Text:Problem 7.38 Assume that the maximum horizontal distance you can throw a baseball (TM = 0.145 kg) at an angle of m = 45° above the harizantal is 25 m. • Part A What is the kinetic energy of the baseball just after it leaves your hand? Ignare air resistance and the small distance the ball is above the ground when it leaves your hand. Take the zero of potential energy to be at the ground. Exprese your anewer with the approprlate units. Value Units K- Submit Requect Ancwer • Part B At the ball's maximum height, what fraction of its total mechanical energy is kinetic energy and what fraction is gravitational potential energy? Enter your anewers numerically eeparated by a comma. VO AZO O IE ? K/E, U,/E = Submit Request Ancwer • Part C If yau throw the baseball at an initial angle of 60° abave the horizontal, at its maximum height what fraction of its total energy is kinetic energy and what fraction is gravitational potential energy? Enter your anewers numerically aeparated by a comma. VO TALO + O (9 ? K/E. U/E- Submit Requect Ancwer • Part D What fraction of the tatal mechanical energy is kinetic energy at the maximum height in the limiting cases of ag = 0° and ag = 90°? Enter your anewere numerically separated by a comma. VO TALO O IE ? K/Em - . K/E - 0 Submit Request Ancwer
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