Consider the following 4 cases of motion of the same mass under a constant downward gravitational acceleration g = 9.8 m/s 2 . a b c h θ α d d o b a c v v v vo v v in cases a & b the mass is released from rest. in cases c & d the initial speeds are v0. in all 4 cases the mass fell the same distance h. calculate the final speed va of the mass.

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.

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