1. Sketch a position-time graph that corresponds to the description below: The object starts at a position of negative four meters • It moves at a velocity of +0.5 m/s for six seconds • The object is then at rest for three seconds • It reverses direction and moves at a speed of 0.75 m/s for four seconds • It continues at a constant speed for another two seconds so that its average velocity over the entire trip is +1/3 m/s.

show the wavelengths of a wave. show the crests of a wave.

dang that balls went far

the force represented by vector a is normal force. if the hockey puck is moving to the right, when it is hit with a significant force by the hockey stick the puck will move off in a different direction. correct on edge.

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.