54:51 Which statement accurately describes one aspect of plate tectonics that involves subduction and seafloor spreading?
• Older crust is melted at subduction zongs.
Crust is created at the coastlines of continents.
Continents do not move as a result of seafloor spreading and subduction
Crust is created as the mantle hardens under the lithosphere.

Which function is performed by earths atmosphere? a. ultraviolet rays are prevented from reaching the ozone layer. b. earths temperature is raised and moderated by trapping in heat c. charged particles from the sun are prevented from reaching earth. d. magnetic charges from space are prevented from reaching earths surface.

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

Imagine that you push on a large rock. at what point does your effort change the rock’s mechanical energy?