The Conservation of Momentum Equation. A 0.400 kg bead slides on a straight frictionless wire and moves with a velocity of 0.035 m/s to the right. The
bead collides elastically with a larger 0.600 kg bead that is initially at rest. After the collision, the smaller
bead moves to the left with a velocity of 0.007 m/s. What is the large bead's velocity after the collision?

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?