QUESTION 4 (a) You are standing on an observation deck 100 m above a city street and drop a rock from rest. A friend sta

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Question 4 A You Are Standing On An Observation Deck 100 M Above A City Street And Drop A Rock From Rest A Friend Sta 1 (213.86 KiB) Viewed 43 times

QUESTION 4 (a) You are standing on an observation deck 100 m above a city street and drop a rock from rest. A friend stands on the street directly below you and throws a rock vertically upward at the same instant that you drop the rock. The initial upward velocity of his rock is 50 m/s. Assuming that they are moving along the same vertical line, and that air resistance can be neglected, calculate: (i) the height at which they will collide, [4] (ii) when they will collide, and [2] (iii) whether your friend's rock will be rising or descending when they collide. [2]