You already told us that its speed is constant. That's one part of acceleration.
The other part of acceleration is the direction it's moving.
If it's rolling in a straight line, then there's no acceleration.
If it's curving left or right, then that's acceleration.
It will help them stay in better shape resulting in better health, being more physically active, and staying happier as a result.
the awnser to ur question is D
Answer:
Its d
atome contain
negative electrons,
positive protons and uncharged neutrons.
Explanation: