Question

10. A body moving uniformly along a circular path has
a) same direction of motion
b) constant velocity
c) constant speed
d) variable speed​

Answer 1

ANSWER

circular motion is a movement of an object along the circumference of a circle or rotation along a circular path. It can be uniform, with constant angular rate of rotation and constant speed, or non-uniform with a changing rate of rotation.

Please follow me

Please mark it as BRAINLIEST

Answer 2

$\huge{ \boxed{ \bf{ \orange{Cons} \blue{tant\:sp} \orange{eed}}}}$

✦ Option (c)

Moving around a circular path involves change in direction continuously, hence the vector quantities like velocity and acceleration can never be uniform in a circular motion. For the vector quantities to be uniform the vector quantities need to have both equal magnitudes and equal directions.

Discussing the options : -

• Same direction of Motion - It is believed that the circle is a polygon with infinite sides, it means a body travelling in a circular motion changes its direction continuously. Hence the option is $\Large{\bf{\red{X}}}$.
• Constant velocity - Velocity is a vector quantity and uniform/constant velocity means same direction as well as same magnitude. But in circular motion, the direction changes continuously. Thus, this option is also $\Large{\bf{\red{X}}}$.
• Constant speed- Speed is a scalar quantity and can be defined by magnitude only. And here the body is moving in a circular motion uniformly, which means the magnitude of speed is constant. Hence, the option is ✅
• Variable speed- No, as it is mentioned in the question, the speed is not variable, it is constant or uniform. Hence, this option is $\Large{\bf{\red{X}}}$.

♦️Refer to the attachment for diagram.

━━━━━━━━━━━━━━━━━━━━

$\huge{ \boxed{ \bf{ \orange{Kn} \blue{ow\:m} \orange{ore...}}}}$

✦In a circular motion, the velocity is $\large{\red{\rm{tangential}}}$ to the circular path. If the body covers equal distances in equal intervals of time, then the motion is said to be an $\large{\rm{\red{uniform \:circular\: motion}}}$. This means, it has uniform speed. When a body moves along a circular path, the direction changes continuously, thus it is non uniform motion or uniform velocity. Speed remains constant in uniform circular motion but not velocity.

━━━━━━━━━━━━━━━━━━━━