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I need a short answer ?

I need a short answer ?-example-1
User Kentaro
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19 votes
19 votes

Answer:

Step-by-step explanation:

7a) t = d/v = 100/45cos14.5 = 2.29533...= 2.30 s

7b) h = ½(9.81)(2.29533/2)² = 6.46056... = 6.45 m

or

h = (45sin14.5)² / (2(9.81)) = 6.47 m

which rounds to the same 6.5 m when limiting to the two significant digits of the initial velocity.

User Rohan Aletty
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