Please solve this with solution, thank you so much - Physics - Motion in one dimension

Question

Please solve this with solution, thank you so much

Debalina Deb · Accepted Answer

solution
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/content_ck_images/ck_6232e59c581f2%20jpg"
style="width: 1022px; height: 268px;">

Please solve this with solution, thank you so much.