On a frictionless, horizontal air table, puck A with a mass of 0.25 kg is moving to the right toward puck B with a mass of 0.35 kg, which is
initially at rest. After the collision, puck A has a velocity of 0.12 m/s
to the left, and puck B has a velocity of 0.65 m/s to the right. What
was the speed of puck A before the collision?

Which is not an example of how an object gains elastic potential energy by stretching? a. jumping on a pogo stick b. pulling on a rubber band c. jumping on a trampoline

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?

The inner planets or call terrestrial because they