13. A particle is moving with a constant speed 4 ms- in a circle. What is the magnitude of average Velocity after half rotation ?
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Answered by
0
Explanation:
- the first time in total, the first time I had a look at the same
Answered by
1
Answer:
2
π
v
The particle starts from point P and after half rotation, it reaches at Q via path PMQ.
Distance covered by particle to reach at Q is d=πR
Time taken, t=
v
d
=
v
πR
Displacement of the particle, s=PQ=2R
∴ Average velocity, v
avg
=
t
s
=
v
πR
2R
=
π
2
v
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