Rocks Thrown Upward-Net Force Shown below arc six rocks that bve heen thrown str

Question

Rocks Thrown Upward-Net Force Shown below arc six rocks that bve heen thrown straight up into the ar he rocks all have the same shape, but they have ditferernt masses. The speeds. The masses of the Tocks and their speeds when released are given in the figu assume for this situation that the effect of air resistance can be rocks are al thrown straight up, but at different res, (We ignored. All start from the same e basis of the nct force on the rocks after heing Rank these rucks from greatest to least on th thrown. 25 m 40 gTA SIO g 4 mis 6 ms ro g 500 8 200 p 4rn's Least Greatest Or, al rocks bave the sme net force on them but not zero. Or, te nel force on all these is zero. Please carefully explain your reasoning How sure were you of your ranking? scirele one) Basically Guessed Very Sure Sure 10 n T. O Kma, D. Maloney Ranking Task Eereiaes in Physics Siudent Editien 20

Explanation / Answer

Net force on the rock is only due to force of gravity acting downwards on the rock

i.e Fg=mg

Therefore answers i

C=E>B>D>A=F

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