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OpenStudy (anonymous):
3 The top of a cliff is 40 metres above the level of the sea. A man in a boat, close to the bottom of the cliff, is in difficulty and fires a distress signal vertically upwards from sea level. Find (i) I ALREADY GOT THE ANS = 29.7ms-1 (ii) the length of time for which the signal is above the level of the top of the cliff. [2] The man fires another distress signal vertically upwards from sea level. This signal is above the level of the top of the cliff for (root) 17 seconds (iii) Find the speed of projection of the second signal.
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OpenStudy (wwhitlock):
Wow, Looks a lot like math to me!
OpenStudy (dumbsearch2):
^ Lul
OpenStudy (anonymous):
It is Maths
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