As you are headed to class, your friend leans out the window of your apartment 10 m above you and shouts that you took her car keys rather than your own. Since you are in a hurry, you decide to toss your friend's keys up to her while she drops your keys down to you.You throw the keys just hard enough to reach her outstretched hand. At what height above you will the two sets of keys pass each other?

Question
As you are headed to class, your friend leans out the window of your apartment 10 m
above you and shouts that you took her car keys rather than your own. Since you are in a
hurry, you decide to toss your friend's keys up to her while she drops your keys down to
you.You throw the keys just hard enough to reach her outstretched hand. At what height
above you will the two sets of keys pass each other?

Image Transcription

As you are headed to class, your friend leans out the window of your apartment 10 m above you and shouts that you took her car keys rather than your own. Since you are in a hurry, you decide to toss your friend's keys up to her while she drops your keys down to you.You throw the keys just hard enough to reach her outstretched hand. At what height above you will the two sets of keys pass each other?

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Physics

Kinematics

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