A stone is projected at an angle of 30° above with the horizontal from the top of a wall and hits the
ground in 5 s at an angle of 45° with the vertical. Which of the following statements is/are correct?
a) The speed of projection is 36.6 m/s
b) The speed of projection is 30 m/s
c) The height of wall is 33.5 m
d) The height of wall is 50 m
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Answer:
The height of wall is 33.5m
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