Three identical rocks are launched with identical speeds from the top of a platform of height 0 h. The rocks are launched in the directions indicated above. Which of the following correctly relates the magnitude vy of the vertical component of the velocity of each rock immediately before it hits the ground?.

Two technicians are discussing how to test a car's exhaust by holding a small piece of paper within an inch of the tailpipe mouth. technician a says that if the paper is vibrating due to a "puffing" output from the tailpipe, this signals a smoothly running engine. technician b says that if the paper is being drawn toward the tailpipe, this could indicate burned exhaust valves. who is correct? a. technician b b. both technicians a and b c. technician a d. neither technicians a or b

Scientists observed a rock stratum with fossil. if mollusks evolved before arthropod, where will their fossils be found.

Which of the following is not a component of your high school transcripts? a. courses you have enrolled in for the current year b. courses you have completed c. your cumulative gpa d. varsity sports you have played