Ms. Rudolph gets on a train that runs around the outside edge of the Detroit Zoo. The track is 2 kilometers long. The train ride lasts for 0.5 hours and drops passengers off at the same spot where they got on. What was Ms. R's average velocity on this trip?
A. 4 kilometers per hour

B. 4 kilometers per hour around the track

C. there was no velocity

Pj conducts an experimental study on the effects of soft music during high stakes science testing. he randomly assigns students at the school. in one condition he does not provide music for testing while in the other group he does provide the music. he administers a pretest at the beginning of the year and a posttest at the end of the year. pj’s design is best described as a: a.static group comparisonb. pretest-posttest control group designc.control-group-time-series designd. nonrandomized control-group pretest-posttest design

Match the word to an antonym. 1. hate evil 2. good knowledge 3. sad short 4. sunset love 5. courteous gigantic 6. minuscule dawn 7. long wise 8. imprudent happy 9. cowardice rude

Why do we have so many wars in the us