9. rise to the challenge problem 2: john is riding on a bus traveling at an average speed of 2.0 x
10 m/s. twenty minutes after john starts his bus ride, john's mom realizes that he left his wallet
in her car. she chases the bus at an average speed of 27 m/s. how long does it take john's
mom to reach the bus? assume she started the chase at the same place john started his bus
ride. (hint: make a d vs. t graph for this situation and find the equation for each line.)

i don't know, you need to give me some answers.

explanation:

hello, i am papaguy.

i have found an answer to your question but use it as information.

information: because weak acids/bases have low concentration of hydrogen ions, the addition of water has a large impact on the ph. 2. a difference in 1 unit is a 10x difference in concentration for example; a liquid with ph of 3 is 10x more acidic than a liquid with a ph of 4. therefore, a liquid with a ph of 3 is stronger.

best of luck!

find the sum of the two horizontal vectors and the sum of the two vertical vectors

isoceles right angled triangle