12 men working 8 hours a day complete a piece of work in 10 days to complete a the same work in 8 days working 15 hours a days t
1 answer:
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Answer:
<em>17 / 8</em>
Step-by-step explanation:
sec A =
cos A = =
⇒ <em>sec A = </em>
<em> </em>
Answer:
h = 17.65 m
Step-by-step explanation:
The given equation gives the speed at impact :
h is height form where the object is dropped
Put v = 18.6 m/s in the above equation.
So, the object must be dropped from a height of 17.65 m.