Question

An object will continue accelerating until:

• A. Resultant force on it begins to decrease
• B. Its velocity changes direction
• C. The resultant force on it is zero
• D. The resultant force is at right angles to its direction of motion

Answer 1

Answer: (C)

The resultant force on it is zero

we know.
$Force\left(F\right)=mass\left(m\right)\times acceleration\left(a\right)$
$a=\frac{F}{m}$
As mass of the object is constant and can not be zero. So, we can say an object will continue accelerating until the resultant force on it is zero.