Assuming there is not friction or air resistance, which of the following is true about total mechanical energy of a swinging pendulum? A. It remains constant throughout the entire swing

B. It is the greatest at the bottom

C. It is zero the entire time

D. It is the greatest at the top

In what way do investigations build scientific knowledge? the results of investigations lead to questions that cannot be tested. they reflect the opinions and social values of scientists, ensuring valid information. the results of investigations lead to new questions, which lead to new investigations. they are not influenced by the research of earlier scientists, so they are able to address gaps in understanding.i