A spring loaded toy gun fires a 0.06 kg projectile horizontally from a height of 2.5 meters above the ground. If the spring constant is 15 N/m and the spring is compressed 30 centimeters, how fast will the projectile be moving when it hits the ground?

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.