New cells are made every second. select every example that would involve new cells being made.

-An egg being fertilized by a sperm and developing into a zygote

-A child growing

-A pollen grain landing on a plant ovule that will develop into a seed

Explanation:

The question says that, "After how long does a mobile acquire a speed of 30 m / s, if it starts from rest and its acceleration is 3 m / s*2"

Initial speed is 0

Final speed is 30 m/s

Acceleration a = 3 m/s²

It is required to find time when it acquire a speed of 30 m/s. Using equation of kinematics as :

So, after 10 seconds it will acquire a speed of 30 m/s.