A decrease in mass will decrease an objects weight because
weight = mass x gravitational constant
From my experience, I would say it is true.
Answer:
Yes, it's correct
Explanation:
Newton's second Law states that the acceleration of an object is proportional to the net force applied on it, according to the equation:

where
F is the net force on the object
m is the mass of the object
a is the acceleration of the object
We can re-arrange the previous equation in order to solve explicitely for a, the acceleration, and we find:

So, we see that the acceleration is proportional to the net force and inversely proportional to the mass of the object.
I believe the answer is a
The instantaneous velocity of the object is its speed and direction at that instant.