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An arrow was fired horizontally from a platform above the ground. Exactly 3 sec after it was released, it struck the ground at an angle of 45o from the horizontal.
1) With what speed and from what height was it launched?
9 years ago

Answers

bobpursley
fired horizontally.
That means the horizontal speed at impace=vertical speed.
Vertical speed:
vf=9.8*3
so launch speed is that.
Now, platform height.
h=1/2 (9.8)3^2
9 years ago

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