Question

plese tell tommorow is my exam of maths
and i want to know important question on youtube but youtube is working it is showing that i am offline please tell that your youtube is working ..plaese help your sister ​

Answer 1

The Burj Khalifa (Arabic: برج خليفة‎, Arabic pronunciation: "Khalifa Tower" in English), known as the Burj Dubai prior to its inauguration in 2010, is a skyscraper in Dubai, United Arab Emirates. With a total height of 829.8 m (2,722 ft, just over half a mile) and a roof height (excluding antenna, but including a 244 m spire[2]) of 828 m (2,717 ft), the Burj Khalifa has been the tallest structure and building in the world since its topping out in 2009 (preceded by Taipei 101

Answer 2

Given Final velocity (v) = 50 m/s

Initial velocity (u) = 30 m/s

Acceleration (a) = 2.5 m/s^2

We know v = u + at

∴ 50 = 30 + 2.5 t

⇒ 50 - 30 = 2.5 t