A block of mass 3m is resting at the bottom of a smooth plane making an angle θ with the horizontal. A bullet of mass m travelling with a velocity v parallel to the plane strikes the block and becomes imbedded in it. The block and the bullet together travel through a vertical height h.

If the bullet had been moving with a velocity 2v the vertical height would have been:

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)

A2k pendulum has a speed of 1 m/s at a height of 1/2 meter

1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?