Earphone definition, a sound receiver that fits in or over the ear, as of a radio or telephone. See more.
Answer Wiki. If a rocket went straight up, it would either continue in that direction and leave Earth, or it would fall back down, depending on its velocity. Most rockets intend to enter orbit, which is an elliptical trajectory, and it's much more efficient to arc into this trajectory than to go straight up and then accelerate laterally.
Â© 2014 The Georgia Center for Assessment Grade 8 Read Passages A and B. Then respond to the questions that follow. Passage A: The Physics of Skydiving Skydiving is not for everyone. But even if you never plan on jumping from a plane, it is an activity that can be cool to think about.First, the plane you take off in typically climbs to upwards of 14,000 feet above the ground.Then, through an open door in the plane, you see something like this: Kind of makes your palms begin to sweat just looking at this, huh? As this picture shows, the next step is to jump.irst, the plane you take off in typically climbs to upwards of 14,000 feet above the ground. Then, through an open door in the plane, you see something like this: Kind of makes your palms begin to sweat just looking at this, huh? As this picture shows, the next step is to jump.