Answer to Question #83099 in Mechanics | Relativity for Naima

Question

1. How long will it take to reach the ground of a stone of mass 5kg thrown from the top of a building of 64m height?
2. An object moving at speed of 20ms-1 loses it speed by 3ms-2. How far does it travel before it stop?
3. A bullet after penetrating 3cm of a wall losses half of its speed. How far will the bullet penetrate the wall afterwards?
4. A bullet was fired horizontally from a tower with a velocity 980ms-1 and it touched the ground after 2s. Find the height of the tower and the distance from the bottom of the tower to the point where the bullet touched the ground?
5. A football kicked making an angle 300 with ground at the velocity 40ms-1. Find the magnitude of velocity of the football after 2s..