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6 August, 19:01

Suppose that 1000 pollen grains slam into the abdomen of a 5.0 g bee that is hovering just above the flower. the grain's mass is 1.0*10-7g. if the collision is inelastic, what is the bee's speed immediately afterward?

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  1. 6 August, 19:02
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    m1 = 5g = 0.005kg v1 = 0 m2 = 1.0 x 10^-7g = 1.0x10^-10kg v2 = 7.5 v3 = ? looks like you did the formula correctly m1v1 + m2v2 = (m1+m2) v3 0 + m2v2 = (m1+m2) v3 m2v2 / (m1+m2) = v3 (1.0x10^-10) (7.5) / (0.005 + 1.0x10^-10) = v3 1.5x10^-7 = v3 However, it said the bee gets hit by 1000 pollen grains, so I would guess you have to multiply 1.0 x 10^-10 by 1000 first, unless the total mass of the 1000 grains really is 1.0 x 10^-10.
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