question 1) why did you take x axis and -x axis here in the question only? why did not you take in previous questions (in solved examples)? how would we know when to apply this type of approach?
question 2) if the ball initially goes up with the velocity 20 m/s(velocity of balloon), then it must have consumed some time there also. why not included that time?
reply ASAP
6 months ago
by
John Arms