A bullet of mass m1 is fired with a speed v into the bob of a ballistic pendulum of mass m2. Find the maximum height h attained by the bob if the bullet passes through the bob and emerges with a speed v/3. (Use any variable or symbol stated above along with the following as necessary: g.) h = ? I also know that Momentum is conserved in the collision of the bullet with the bob and kinetic energy is transformed into gravitational potential energy as the bob swings up to its maximum height.

You have two photos of a person walking. one shows the person at the corner of third and main streets, the other shows the person at the corner of tenth and main streets. there are lampposts at every corner in this town, and the first picture shows it to be 10: 32: 00 exactly. the second picture shows it to be 10: 49: 30. you know three facts: (1) all of the clocks are synchronized; (2) there are exactly 12 equal-sized blocks per kilometer in this town; and (3) the streets that cross main in this area are numbered consecutively, with no interruptions. what is the person’s average speed in kilometers per hour?