Surviving the impact of a plane crash but then having the plane explode does not necessarily mean immediate death within seconds. The outcome would depend on various factors such as the distance from the explosion, the severity of injuries sustained from the crash, and the individual's proximity to the blast. It is possible for someone to survive the initial impact only to succumb to injuries sustained from the explosion or other factors in the aftermath. **

It is possible to survive the impact of a plane crash and then be killed by the subsequent explosion, but it is not guaranteed. The severity of the explosion and the proximity of the individual to the blast will determine their chances of survival. If the explosion is large and the individual is close to the source, they may be killed instantly. However, if they are further away or shielded from the blast, they may have a chance of survival. Ultimately, the outcome would depend on the specific circumstances of the crash and explosion. **

The mass of an object does have an influence when rolling along an inclined plane. The mass affects the object's inertia, which in turn affects its acceleration and the force required to move it up or down the incline. Heavier objects will require more force to move up the incline and will have greater gravitational force pulling them down the incline. Therefore, mass does play a role in the object's motion along an inclined plane. **

To reflect a plane on the plane x1x3, you would first find the equation of the plane you want to reflect. Then, you would substitute x2 with -x2 in the equation to reflect it across the x1x3 plane. This means changing the sign of the coefficient of x2 in the equation of the plane. The resulting equation will be the reflection of the original plane across the x1x3 plane. **

To reflect a plane across the plane x1x3, you can first find the equation of the mirror plane x1x3. Then, for each point on the original plane, you can find its reflection across the mirror plane by using the formula for reflecting a point across a plane. This involves finding the perpendicular distance from the point to the mirror plane and then using that distance to find the reflected point. By applying this process to all points on the original plane, you can obtain the reflected plane across the x1x3 plane. **

To determine a parallel plane to a given plane, you can use the normal vector of the given plane. If the normal vector of the given plane is (a, b, c), then the parallel plane will have the same normal vector. You can then use this normal vector to find the equation of the parallel plane. If the given plane has the equation Ax + By + Cz + D = 0, then the parallel plane will have the equation Ax + By + Cz + K = 0, where K is a constant. This will ensure that the two planes are parallel to each other. **

To establish a parallel plane to the x1-x2 plane, one can use the equation of the x1-x2 plane, which is typically written as z = 0. To create a parallel plane, one can simply add or subtract a constant value from the right-hand side of the equation. For example, to create a parallel plane that is 3 units above the x1-x2 plane, the equation would be z = 3. This will create a new plane that is parallel to the x1-x2 plane and shifted vertically by 3 units. **

The support vector of another plane in the same plane is the vector that is perpendicular to the plane. In other words, it is a vector that is orthogonal to the plane and lies entirely within the plane. This vector is important in defining the orientation and position of the plane in space. **