Which of the following characterizes the net force on a particle falling through a fluid at its terminal speed?
A)It is at a maximum.
B)It is upwards.
C)It is downwards.
D)It is zero.

Question

Quizplus · Accepted Answer

When a particle is falling through a fluid at its terminal speed, the drag force acting on the particle is equal in magnitude and opposite in direction to the gravitational force acting on it. As a result, the net force on the particle becomes zero, and the particle continues to fall at a constant speed.

Which of the Following Characterizes the Net Force on a Particle