Home › NEET UG › physics › c11phy_circular_motion › Per NCERT §3.10, in UNIFORM circular motion, wha…
Per NCERT §3.10, in UNIFORM circular motion, what stays constant and what changes?
ABoth v and direction constant
BDirection constant; speed changes
CSpeed constant; direction of v changes
DBoth v and direction change
Answer & Solution
Correct answer: C. Speed constant; direction of v changes
NCERT §3.10: 'uniform' means speed |v| is constant; direction of v continually changes (tangent to circle).
Related questions
A ceiling fan rotates at $120$ rpm. Its angular speed is approximately:A stone tied to a string is whirled in a horizontal circle at constant speed. Its acceleraA stone is thrown at $45^\circ$ on level ground with speed $u = 10$ m/s. Using $g = 10$ m/A football kicked with speed $u = 20$ m/s at $30^\circ$ above horizontal has initial vertiPer NCERT §3.10 historical note, the analysis of centripetal acceleration was first publisPer NCERT §3.10, the centripetal acceleration of a particle in UCM depends linearly on whiPer NCERT Example 3.9, an insect on a 12 cm circular groove completes 7 revolutions in 100Per NCERT §3.10, the direction of the VELOCITY vector at any point on the circular path in