Aball is thrown directly downward with an initial speed of 8.00 m/s, from a height of 30.0 m. after what time interval does it strike the ground?

In positive numbers less than 1, the zeros between the decimal point and non zero are significant

Imagine you work as a consultant, and your daily job involves listening to the constructive criticism of others. as part of your job, you must listen to opposing viewpoints to make important decisions. in this activity, you are a consulting dam engineer. you must make a decision about four different dams; should they be repaired, taken down, or left alone? you will listen to contrasting opinions about what should be done with the dams before you make the final decision. as the consulting dam engineer, what do you decide to do with this dam? explain your reasoning. by making your decision, did you support the opinions of the mayor and/or the dam safety official? why or why not? (site 1)

This is for my 8th grade science class, i really don’t understand. can someone me? , lol.