Started: Sep 13 at 1:39pm Quiz Instructions
Use the following information for questions 1-3
Car A starts at the origin at time t = 0 seconds and travels at a constant
speed of 15 m/s. Car B starts from the origin 10 seconds later and travels
at a constant speed of 20 m/s.

How far from the origin is car A when car B starts to move ?

How long has car A been traveling when it is based by car B ?

How far apart they are after a total time of 60 seconds has elapsed ?

the tires are rotating at 0.434 rpmlinear speed=45 m/sdiameter=0.550 mradius=0.275 mnow v= rωω= v/rω=45/0.275ω=163.6 rad/sω=163.6 rad/s (1rev/2π rad) (60s/1m)ω=1563 rpm

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.