You and your friends are doing physics experiments on a frozen pond that serves as a frictionless, horizontal surface. sam, with mass 73.0 kg, is given a push and slides eastward. abigail, with mass 57.0 kg, is sent sliding northward. they collide, and after the collision sam is moving at 40.0^\circ north of east with a speed of 7.00 m/s and abigail is moving at 18.0^\circ south of east with a speed of 9.40 m/s. what was the speed of each person before the collision? a. sam's speed: b. abigail's speed: c. by how much did the total kinetic energy of the two people decrease during the collision?

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)

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Alarge box of mass m is pulled across a horizontal frictionless surface by a horizontal rope with tension t. a small box of mass m sits on top of the large box. the coefficients of static and