Question
Question: The combination of rotational motion and the translational motion of a rigid body is known as...
The combination of rotational motion and the translational motion of a rigid body is known as
A
Frictional motion
B
Axis motion
C
Angular motion
D
Rolling motion
Answer
Rolling motion
Explanation
Solution
Rolling motion is precisely defined as the motion of a rigid body (like a wheel or a sphere) that rotates about an axis while its center of mass translates. When a body rolls without slipping, the point of contact with the surface is instantaneously at rest, which is a combination of its translational velocity and its rotational velocity.