Activities and Due Dates HW: Energy Applications n Agricultural College-PHYS 111

Question

Activities and Due Dates HW: Energy Applications n Agricultural College-PHYS 1111 -Fall17-SEAT Grade 11/16/2017 11:55 PM 73.5/100 11/8/2017 09:47 PM Question 15 of 23 Map Find the kinetic energy of the objects in the following scenarios: a) A cosmic pion of mass 135 MeVic fies through outer space at a speed of 9.05 103 for help converting MeVic to kg km/s. See the hint Number b) A cheetah weighing 6.20 x 10? N chases a gazelle at a speed of 33.1 m/s. Number c) A truck weighing 2.44 short tons speeds down the road at 726 mph. Number K- d) An asteroid of mass 3.13 10 kg buzzes the Earth at a speed of 15100 mph. Number aboutus careers privacy policy cerms of use contact s

Explanation / Answer

a) m = 135 MeV/c2 = 2.4066 x 10^-28 kg

v = 9.05 x 10^6 m/s

KE = 0.5*m*v^2 = 0.5*2.4066*10^-28*[9.05 x 10^6]² = 9.86*10^-15 J

b) m = 620/9.8 = 63.3 kg

v = 33.1 m/s

KE = 0.5*m*v^2 = 0.5*63.3*33.1^2 = 34676.1 J

c) m = 2.44 tons = 2213.5 kg

    v = 72.6 mph = 32.5 m/s

KE = 0.5*m*v^2 = 0.5*2213.5*32.5^2 = 1169004.7 J

d) m = 3.13*10^17 kg

     v = 15100 mph = 6750.3 m/s

     KE = 0.5*m*v^2 = 0.5*3.13*10^17*(6750.3)^2 = 7.13*10^24 J

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.