## Why do we take differential element “dx” from the origin at a distance “x” only?

Why do we take differential element “dx” from the origin at a distance “x” only.(the variable “x” and x in “dx” are same.why?)

Asked Suraj

## What s the initial Horizontal Velocity of the Bomb?

An aircraft is flying along a horizontal path with a velocity 30 m per second at 625m above the ground level. A bomb is released at rest with respect to the plane. At the same time, a cannon yard which is on the ground right below the aircraft ,fires a bullet at angle of 45 degrees to the horizontal as it strikes the bomb. What is the initial horizonatal component of velocity of the bomb?

Asked Nishali