Ill upvote

natalie accelerates her skateboard along a straight path from 4 m/s to 0 m/s in 25.0 s. find the acceleration.

question 2 options:

0.16 m/s2

-6.25 m/s2

-0.16 m/s2

6.25 m/s2

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.