A6.0-kg object, initially at rest in free space, "explodes" into three segments of equal mass. two of these segments are observed to be moving with equal speeds of 20 m/s with an angle of 60° between their directions of motion. how much kinetic energy is released in this explosion?

Heena wants to measure the volume of a ball that is 24 cm across. how should she set up her equation?

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)

Tall pacific coast redwood trees can reach heights of about 100 m. if air drag is negligibly small, how fast is a sequola cone moving when it reaches the ground f it dropped from the top of a 100 m tree?