Question

please answer this question fast​

Answer 1

Answer:

I am a 13 year old boy how am I suppose to do this

Answer 2

answer:

a=6cm/s

Explanation:

a=change in speed/time

max change in V is between 30-40 second

30 to 40 seconds time period

v at 30 sec = 20cm/s

v at 40 sec= 80cm/s

so a=80-30/40-30

a=6cm/s