When an object moves its length contracts in the direction of motion. The faster it moves the shorter it gets in the direction of motion.
The object in this question moves and then stops moving. So it's length first contracts and then expands to its original length when the motion stops.
The speed doesn't have to be anywhere near the speed of light. When the object moves its length contracts no matter how fast or slow it's moving.
We know that:
d=vt
d=32mph*5h
d=160mi
A motorcycle speeding up on the highway because kinetic involve movement
The answer should be B. a stable isotope to a decaying isotope.
Answer:

Explanation:
Given that
Number of particle =N
Equilibrium temperature= T
Side of cube = L
Gravitational acceleration =g
The kinetic energy of an atom given as

Where
Equilibrium temperature= T
Boltzmann constant =K
K =1.380649×10−23 J/K