Extra Credit (2 points) A 30 kg object is dropped from a helicopter. ( Acceleration is due to gravity)
What are the initial:
Initial acceleration?
Initial force ?
Assuming the object is accelerated long enough to reach a constant velocity of 30 m/s,
what is the object's final:
Final net force?
Final acceleration?

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)

Achlorine atom has 17 protons and 18 neutrons. what is its mass number? what is its atomic number?

How much energy must a refrigerator absorb from 225 g of water so that the temperature of the water will drop from 35°c to 5°c