Aparticle's position is given by the formula r 2+3¢2 1.86t where zis in metres and tis in seconds and 0< t< 1se (a) what is the particle's velocity at t 1second? number m/s (b) what is the particle's maximum speed in this period?

answer and explanation;

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.

b. false

explanation:

suppose a rock in free fall is dropped off a cliff. after falling for 5 seconds, its speed would not be 100 m/s.