How long does it take for the backpack to reach the ground

Reference no: EM13507568

at the top of a 100m cliff a backpack is dropped. one second later an archer fires an arrow straight down that hits the backpack just as it reaches the ground,

How long does it take for the backpack to reach the ground?

how fast is it traveling at that point?

How fast must the arrow travel initially to reach the backpack?

Reference no: EM13507568

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