I'll mark which of the following displays objects that are generally smaller than a planet?

a. stars and comets
b. astreoids, comets, and meteors
c. asteroids, meteors, and stars
d. stars, comets, and asteroids

Plz mark brainliest 30 points 1) find the momentum of a 12 kg snowball that is rolling with a velocity of 9 m/s. 2) an 8 ball with a mass of .5 kg is sitting at rest. it is hit by the cue ball (1 kg) traveling at 2.5 m/s. if the cue ball is at rest after the collision, how fast is the 8 ball traveling after the collision? 3) two football players are running toward each other. if the offensive player is 75 kg and is running 8 m/s, how fast must the 60 kg defensive player run in order for the two players to hit and stop?

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

In the space, show a correct numerical setup for calculating the number of moles of co2 present in 11 grams of co2