Answer i've done the math multiple times and everytime i get the answer 21,950. i don't think i'm doing the math wrong, maybe try asking the teacher or whoever is the one grading it cause it could be a typo or something like that.
Step-by-step explanation:
Absolute value tells how many spaces the number is from 0. And opposite numbers are negative numbers on the left side of 0.
You need to know the equation of motion for the particle.