AlijahjwunF5514
09.09.2020 •
Biology
In an experiment to determine the acceleration due to gravity, one student drops a tennis ball out of the
school's third floor window. Another student starts a timer when the first student lets go and stops the timer
when the ball hits the ground. They conduct the experiment once and record the data. Is this a valid
experiment, why or why not?
A. Yes it is valid
B. No, it is not valid because they did not have any repeat trials.
C. No, it is not valid because they are only dropping one item.
D. No, it is not valid because the short distance means there will be a lot of error due to the student's reaction time.
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Ответ:
What is significant about Jing-mei’s discovery in the final paragraphs? What does it reveal about her perspective now? Does this bring resolution to the conflict(s) in the story or not?
Explanation: