SSC MTS EXAM

Detailed explanation-1: -The equation gives: 340. m/s = (750. m)/t. Solving, t = 2.21 s.

Detailed explanation-2: -When this fuse, called a fast-acting fuse, is ignited with a flame or a spark, the gunpowder explodes, creating lots of heat and gas that cause a buildup of pressure beneath the shell. Then, when the pressure is great enough, the shell shoots up into the sky.

Detailed explanation-3: -Fireworks are the result of chemical reactions involving a few key components–like a fuel source (often charcoal-based black powder), an oxidizer (compounds like nitrates, chlorates that produce oxygen) and a color-producing chemical mixture. The oxidizer breaks down the chemical bonds in the fuel, releasing energy.