An object of mass 30 kg is in free fall in a vacuum where there is no air resistance. Determine the acceleration of the object​

'which of these statements about the scientific method is not true? all experiments must follow the same number of steps in the procedure. experiments may be repeated several times. some unexpected results can be beneficial. experimental results may or may not support the hypothesis.

When a human or animal consumes food, the carbon in that food is most likely to be converted into which of the following elements? a. carbon remains carbon b. nitrogen c. oxygen d. hydrogen

What are the student's observations and inferences before he starts his investigation?