Question

For a particular type of motion, the velocity is zero but the speed is a nonzero quantity. Which statement can you make about this motion?. . Select one of the options below as your answer:. . . . A. . The starting and ending points of the motion are the same.. . . . . B. . It is a circular motion.. . . . . C. . It is an oscillatory motion.. . . . . D. . The motion occurs in a straight line.

Answer 1

The correct answer for this question is letter A. If the starting and ending points of the motion are the same, velocity is zero but speed is a non-zero quantity. Velocity is a physical vector quantity that requires both magnitude and direction.

Answer 2

Keep in mind this relationship

1.  Relationship between Speed, Distance and time

→Distance = Speed × Time

$Speed=\frac{Distance}{Time}$

2. Relationship between Displacement, Velocity and time

→Displacement = Velocity × Time

$Velocity=\frac{Displacement}{Time}$

So, velocity is zero only when

Displacement= 0,so when motion is circular motion,

Total Displacement =0 because initial and final position are same.

But , Speed is not zero, because

Total Distance Traveled = 2 π × (Radius of circle).

So, Option (A)The Starting and end point are same  .. . . . in which  the velocity is zero but the speed is a nonzero quantity.