Ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

 C)5.65 m/s

Explanation: usatestprep ..

Both Ray and his wrestling partner have kinetic energy by virtue of them moving. Ray has a mass   , velocity     .  Ray's kinetic energy is calculated as follows,

Bobby wishes to archive the same amount of kinetic energy as Ray. To find what his velocity should be, we have to solve for     in the kinetic energy formula. For Bobby,      , mass  .

So,

.

This means for Bobby to have the same kinetic energy as Ray, he has to run at

graphing motion: mastery test

209be

what is the instantaneous acceleration of

the particle at point b?

0 meters/second?

10 meters/second?

12 meters/second?

velocity imetersisecond

15 meters/second?

20

time (seconds)

answer: 0 meters/second^2

as we know our atmosphere or air have different levels. every level has other gasses, and every gas has another permeability. when the light comes from lower permeability to higher permeability, it changes its direction. so that means that when the light comes from the moon to the earth, it changes it's direction many more times. it basically means that the shape of the light part of the moon is changed on the earth.

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