Answer:
Explanation:
Displacement =∣∣∣AB−→−∣∣∣=OA2+OB2−−−−−−−−−−√
=R2+R−−−−−−√)=2–√R
(b) For the motion from A→C, distance travelled =2πR2=πR
Displacement =∣∣∣AC−→−∣∣∣=2R
(c ) For the motion from A→D, distance
travelled =2πR×34=32πR
Displacement =)⃗ AD)∣=R−−√2+R2
=2–√R
(d) For one compsition coincides with the initial position.