You are on a parkour course. first you climb a angled wall up 9.5 meters. they you shimmy along the edge of a 3.5 meter long wall. lastly you traverse 15 meters of obstacles to reach the end of the course. the trip takes 43 seconds. what is your average speed? question 8 options: 0.65 m/s 1204 m/s 1.5 m/s 0.22 m/s

9.5+3.5+15 m in 43 secs

28m in 43 secs

28/43 m/s

total distance/total time=av speed

answer; how far out of place which the object finished relative to the starting location;

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me