Answer:
Hope ive done everything correctly
3420°
Step-by-step explanation:
The sum of angle measures of an n-gon is ...
angle total = (n-2)×180°
For n = 21, the angle total is ...
21-gon total = (21 -2)×180° = 3420°
−1.25, −310, -0.03, 125
Acceleration: rate of change of velocity with time.
Here, that acceleration is:
100 m/s - 150 m/s
----------------------------
10 sec
= (-150 m/s) / (10 sec) = - 15 meters per second squared
