Answer:
An object's acceleration is the rate its velocity (speed and direction) changes. Therefore, an object can accelerate even if its speed is constant - if its direction changes. If an object's velocity is constant, however, its acceleration will be zero.
Answer:
B. 17,705.1 J
Explanation:
The hear released when the mercury condenses into a liquid is given by:

where
m = 0.06 kg is the mass of the mercury
is the latent heat of vaporization
For mercury, the latent heat of vaporization is
, so the heat released during the process is:

So, the closest option is
B. 17,705.1 J