(iii) What is true about the average net force acting on the particle? (Select a
ID: 1573264 • Letter: #
Question
(iii) What is true about the average net force acting on the particle? (Select all that apply.)
a) The net force points in the same direction as the change in the average momentum vectors.
b) The net force points in the same direction as the average momentum vectors.
c) There are no forces acting on the particle.
d) The net force acting on the particle points in the +x-direction.
e) The net force acting on the particle points in the -x-direction.
f) The net force points in opposite direction of the change in the average momentum vectors.
g) There is no net force acting on the particle.
h) The net force points in the opposite direction of the average momentum vectors.
Explanation / Answer
From the snapshots it is clear that the particle is traveling lesser and lesser distance in each snapshot, it means that velocity of the particle is decreasing or this is decelerated motion. So
Statement A:- True, Because according to Newton's second law rate of change of momentum = net force applied.
Statement B:- False momentum has the direction in the direction of velocity vector but net force is acting opposite to the velocity vector as velocity is decreasing.
Statement C:- False, As the velocity is changing so there is a net force.
Statement D:- True, As the net force is acting opposite of the motion of the particle.
Statement E:- False, As the net force is acting opposite of the motion of the particle.
Statement F:- False, Because according to Newton's second law rate of change of momentum = net force applied
Statement G:- False, As the velocity is changing so there is a net force.
Statement H:- True
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