A body is said to be in motion when it's position changes continuously.
Relatively hot objects emit visible light.
Some examples:
==> the wire coils in the toaster;
==> the spoon that you stuck in the flame on the stove;
==> the fine wire in the lightbulb when current goes through it.
VERY radioactive objects also do that. But if you're actually
standing there watching an object that's THAT radioactive,
then you're in big trouble.
Answer:
b
Explanation:
determine the rotational kinetic energy about it's center of mass
Acceleration = change in velocity/time
= 40/5
=8m/s^2