If you observe a first quarter on January 3rd, on what date would you observe a full moon?

January 24th

Explanation:

It is about 21 days, so add 21 and 3, 24, so on January 24th

c, 1a hope this

the chart show the masses and velocities of two colliding objects that stick together after a collision.

according to the law of conservation of momentum, the momentum of the object after the collision is  

answer

1,500

kg • m/s.