A ball is dropped from a tower of height 100m and at the same time another ball is thrown vertically upwards with velocity 40m/s when and where will the two balls meet?
![100-meter-tall smog-sucking tower is apparently helping to clean up Xi'an's air | by Shanghaiist.com | Shanghaiist | Medium 100-meter-tall smog-sucking tower is apparently helping to clean up Xi'an's air | by Shanghaiist.com | Shanghaiist | Medium](https://miro.medium.com/v2/resize:fit:800/1*ff4aHEUQ1gvRJ76IlJ4ugQ.jpeg)
100-meter-tall smog-sucking tower is apparently helping to clean up Xi'an's air | by Shanghaiist.com | Shanghaiist | Medium
![Kids run in front of the 100-meter-tall Bayterek Tower, also referred to a 'large lollipop', at the new capital Astana, Kazakhstan, 17 July 2007. The twin office towers by prize winning architect Kids run in front of the 100-meter-tall Bayterek Tower, also referred to a 'large lollipop', at the new capital Astana, Kazakhstan, 17 July 2007. The twin office towers by prize winning architect](https://c8.alamy.com/comp/DB0DR3/kids-run-in-front-of-the-100-meter-tall-bayterek-tower-also-referred-DB0DR3.jpg)
Kids run in front of the 100-meter-tall Bayterek Tower, also referred to a 'large lollipop', at the new capital Astana, Kazakhstan, 17 July 2007. The twin office towers by prize winning architect
![The length of the shadow of a building is 100 meters, as shown below: the shadow of a building is 100 meters long. The acute angle that the shadow makes with the line The length of the shadow of a building is 100 meters, as shown below: the shadow of a building is 100 meters long. The acute angle that the shadow makes with the line](https://d138zd1ktt9iqe.cloudfront.net/media/seo_landing_files/q-76-5-1635574511.png)
The length of the shadow of a building is 100 meters, as shown below: the shadow of a building is 100 meters long. The acute angle that the shadow makes with the line
![From a Height of 100 Meters Offers a Beautiful View. Stock Image - Image of weather, clear: 163434205 From a Height of 100 Meters Offers a Beautiful View. Stock Image - Image of weather, clear: 163434205](https://thumbs.dreamstime.com/z/height-meters-offers-beautiful-view-site-altitude-meters-offers-beautiful-view-all-163434205.jpg)