Question

A force $F_1$ accelerates a particle from rest to a velocity v. Another $F_2$ decelerates the same particle from v to rest, then:

• A. $F_1$ is always equal to $F_2$
• B. $F_2$ is greater than $F_1$
• C. $F_2$ may be smaller than, greater than or equal to $F_1$
• D. $F_2$ cannot be equal to $F_1$

Answer 1

Answer: (C)

$F_2$ may be smaller than, greater than or equal to $F_1$

We cannot say anything about the magnitude of the forces because it is not mentioned by how much time each of the forces has taken to increase/decrease the velocity.