Answer:
The time travel is
t=8 s
Explanation:
Check
PLEASE HELP MEEE!!!! Write a scientific explanation justifying why graph 2 shows the relationship between kinetic energy and spe
ed.
1 answer:
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Answer:
4.5 m/s
Explanation:
The rock must barely clear the shelf below, this means that the horizontal distance covered must be
while the vertical distance covered must be
The rock is thrown horizontally with velocity , so we can rewrite the horizontal distance as
where t is the time of flight. Re-arranging the equation,
(1)
The vertical distance covered instead is
where we omit the term since the initial vertical velocity is zero. From this equation,
(2)
Equating (1) and (2), we can solve the equation to find :