M Superman runs until reaching his flight takeoff speed of 15
below, where rightward is the positive velocity direction
A graph of his velocity over time is shown
S
Velocity
(
Time (s)
1
2
3 4 5
-57
- 10+
- 15+
Which graph shows his acceleration over time?

A

Explanation:

KHAN ACADEMY

ok

explanation:

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