An object of mass m1 moving along a horizontal path with a...

An object of mass m1 moving along a horizontal path with a speed v1 has a kinetic energy KE1.If a second object of mass m2 = 2m1 moving along the same path with a speed v2 and has a kinetic energy KE2 = 32KE1, then its speed v2 will be equal to: V2 = 4 V1 V2 = V1 V2 = 6 V1 V2 = 3 V1 V2 = 2 V1

Six blocks with different masses, $m$, each start from rest at the top of smooth, frictionless inclines having length $d$ and vertical height $h$ and slide down. Rank the order, from greatest to smallest, of the final kinetic energies of the masses when they reach the bottom of the inclines after having traveled their full lengths. If any of the situations yield the same kinetic energies, give them the same ranking. (a) $m=10 \mathrm{kg} ; h=1 \mathrm{m} ;$ and $d=10 \mathrm{m}$ (b) $m=10 \mathrm{kg} ; h=1 \mathrm{m} ;$ and $d=5 \mathrm{m}$ (c) $m=5 \mathrm{kg} ; h=0.5 \mathrm{m} ;$ and $d=10 \mathrm{m}$ (d) $m=1 \mathrm{kg} ; h=2 \mathrm{m} ;$ and $d=5 \mathrm{m}$ (e) $m=1 \mathrm{kg} ; h=0.5 \mathrm{m} ;$ and $d=5 \mathrm{m}$ (f) $m=15 \mathrm{kg} ; h=0.75 \mathrm{m} ;$ and $d=7.5 \mathrm{m}$

Question

An object of mass m1 moving along a horizontal path with a speed v1 has a kinetic energy KE1.If a second object of mass m2 = 2m1 moving along the same path with a speed v2 and has a kinetic energy KE2 = 32KE1, then its speed v2 will be equal to: V2 = 4 V1 V2 = V1 V2 = 6 V1 V2 = 3 V1 V2 = 2 V1

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