NDA2021General AbilityGeneral ScienceActual
A uniform motion of a car along a circular path experiences
Options
- Aa change in speed due to a change in its direction of motion
- Ba change in velocity due to a change in its direction of motion
- Ca change in momentum due to no change in its direction of motion
- Da constant momentum due to a change in its direction of motion.
Correct answer
B. a change in velocity due to a change in its direction of motion
Step-by-step solution
An object in uniform circular motion experiences an inward net force. This inward force changes in velocity due to a change in its direction of motion. It is sometimes referred to as a centripetal force, where centripetal describes its direction. Without this centripetal force, an object could never alter its direction. The fact that the centripetal force is directed perpendicular to the tangential velocity means that the force can alter the direction of the object's velocity vector without altering its magnitude.