If the object being represented is going both up and to the right.
The book's vertical position in the air is

where
. It reaches the ground when
, at a time
such that

So it takes the book 4 seconds to reach the bottom. The given initial velocity is irrelevant since it only has a horizontal component; vertically, the book is starting from rest.
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13/2 = 6.5 Km/h
That’s 6500/3600= 1.8 m/s
Answer:
none no work cuz no motion
Explanation:
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