A boy fires a 60 g pebble with his slingshot. The pebble leaves the slings hot at 35 m/s. How high above the slingshot will the pebble rise if it is fired straight up?
If the pebble is fired so that it goes in an arc and has a speed of 10 m/s at its maximum height, what will the maximum height be?
At what speed would an 80 g pebble have to be fired to reach the same height as the pebble in (a)? Assume that the 80 g pebble is also fired straight up.

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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.