I would make the ramp flatter. In doing so the ramp would have to be longer.
Answer:
Explanation:
This problem is related to vertical motion, and the equation that models it is:
(1)
Where:
is the rock's final height
is the rock's initial height
is the rock's initial velocity
is the angle at which the rock was thrown (directly upwards)
is the time
is the acceleration due gravity in Planet X
Isolating and taking into account 
:
(2)
(3)
(4) This is the acceleration due gravity in Planet X
Repeat the experiment
Explanation:
To increase the validity of the results obtained from the single experiment, the students should be encouraged to repeat the experiments more number of times as much as possible.
In an experiment, scientist always try to limit errors by making precise and accurate observation. A single observation does not really represent a precise and accurate finding. When an experiment is repeated as often as possible, the reliability of the conclusion drawn from the hypothesis testing will improve and the results can be accepted to be valid.
A single observation/experiment is not valid enough.
Learn more:
Experiments brainly.com/question/5096428
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A number of stars that orbit each other bound by gravitational attraction.
Answer:
B
Explanation:
This is the correct answer because given that this is a closed system, this means that energy is not lost but only changes form. The fact that the ball bounces shorter each time shows that energy is being transformed and not lost. Because of this, the ball must be transforming kinetic energy into sound which is why B is correct
