Problem

Problem

A force

F_1

accelerates a particle from rest to a velocity

v

. Another force

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

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