A student throws a set of keys vertically upward to his fraternitybrother, who i

Question

A student throws a set of keys vertically upward to his fraternitybrother, who is in a window 4.30 m above. The brother's outstretched handcatches the keys 1.35 slater. (a) With what initial velocity were the keys thrown?
m/s

(b) What was the velocity of the keys just before they were caught?(Take upward as the positive direction.)
m/s
(a) With what initial velocity were the keys thrown?
m/s

(b) What was the velocity of the keys just before they were caught?(Take upward as the positive direction.)
m/s

Explanation / Answer

t = 1.35s

y = 4.30m

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