IB Physics - 40 multiple choice question paper with working - Version 1 - Part 1

This is a mock exam work-through of an IB level multiple choice exam. Part 1 of 4.
NOTE: THESE QUESTIONS ARE NOT ALL FROM IB SO YOU MIGHT NEED A CALCULATOR. Remember, IB paper 1 does not allow a calculator normally.
The original un-marked question paper is here - drive.google.com/file/d/1felE...
Full playlist with all parts here: • IB 40 mark multiple ch...

[@prathameshrumde3027]

THANK YOU SIR

[@bombayaviation6563]

a very good evening from india sir i have a doubt, in the 7th question how did you get 19 m? because after i calculated the value it shows me the answer, 68m! could you please help me with this solution?
Thank you!