ehook p?attempt-17896298page 2 UpIC 5t MMie DashboardGiraded boam pd 203 LIVE CH

Question

ehook p?attempt-17896298page 2 UpIC 5t MMie DashboardGiraded boam pd 203 LIVE CHAT HELP CENTER Log Ou pter 6: The Physics of Extended Objects / Graded Exam #2 mass m is dropped from rest to the ground from a height h. Which of the foliowing is correct? Select one: a, when it strikes the ground, the speed of the mass is inversely proportional to h. b. The kinetic energy of the mass when it strikes the ground is inversely proportional to h. c. The kinetic energy of the mass when it strikes the ground is independent of m d. When it strikes the ground the speed of the mass is independent of m. Next page 11 PM ^ ' 1/9/2018

Explanation / Answer

Ans is d (last one )

a)Speed will be directly proportional to height ( false).. more height means more speed, more energy.

b)Kinetic energy will also be directly proportional to height .( False)

c)Kinetic energy is directly proportional to mass.( False)

d ) true

Mgh= 1/2 mv2 .. mass cancels out gives v= 2gh. .

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