25 kg
Explanation:
we can calculate the mass of the crate by using the Newton's second law:
where
F is the force acting on the crate
m is the mass
a is the acceleration
In this problem, 
and 
, so we can re-arrange the equation above to calculate the mass of the crate:
<span>So the question is how does heat prefer to remain and to unscramble the letters ONMFRIU. The unscrambled letters mean: UNIFORM. The heat likes to remain uniform because thermodynamic systems always tend to reach thermal equilybrium after some period of time that is specific for each system. </span>
<span>The vertical axis represents the velocity of the object</span>
