A red block (mr=2kg) is released from rest and slides down a slope. At the bottom it collided with a blue block (mb=0.5kg). They stick together after the collision. a) what is the velocity of the blocks immediately after the collision?

b) the blocks then slide into a ruff area offering 4N of friction. How many seconds does it take for the blocks to come to a rest?

c) How far has it travelled in the first 3s of moving in the sand zone?

Which accurately compares concave and convex lenses?

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?

By examining a wave’s pattern after it interacts with a barrier or gap, measurements can be made to better understand certain wave phenomena. what is a broad question you can answer by doing this experiment?