A 50-g ball moving at 10 m/s in the +x direction suddenly collides head-on with a stationary ball of mass 100 g. If the collision is perfectly elastic, what is the velocity of each ball immediately after the collision?
A) -3.3 m/s, +6.7 m/s B) +6.7 m/s, -3.3 m/s C) -6.7 m/s, +3.3 m/s D) +3.3 m/s, -6.7 m/s
A
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A) tangential speed. B) angular acceleration. C) tangential acceleration. D) linear displacement. E) centripetal acceleration.
Convectional lifting is caused by
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How did Harlow Shapley use the period-luminosity relationship of RR Lyrae variables to determine the size of the Milky Way galaxy?
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