Superman, it is said, is able to leap over tall buildings with a single bound. Suppose he bounds upward with an initial velocity of 400 m/s (faster than a speeding bullet) at an angle of 80° from the horizontal. a) How tall a building can he leap over? b) How far from his starting point will he land?

multiple

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

auroras are generated by charged solar particles hitting molecules in earth's atmosphere. this usually happens in high latitudes, because our planet’s magnetic field tends to funnel these particles toward the poles. that’s why it can be experienced in northern ohio.