Question

0.2. A) A cyclist starts from the centre O' of a circular path of radius 1 km.
reaches the edge 'Pof the path and then cycles along the circumference and
return to the centre along QO' as shown in ligure below.
If round trip takes 10 minutes the net displacement of the cyclist is


1) 2π ii) 0 3) 2π+2 iv) 2π +1​

Answer 1

Answer:

0

Step-by-step explanation:

By definition, displacement is the minimum distance between initial and final position.

Here, the initial position and final position of the cycle is same.

So, net displacement is zero.

Answer 2

Answer:

Average speed of the cyclist is given by the relation:

Average speed = Total path length / Total time

Total path length = OP + PQ + QO

= 1 + (1 (2π × 1) / 4 ) + 1

= 2 + (π / 2)

= 3.570 km

Time taken = 10 min = 10 / 60 = 1 / 6 h

∴ Average speed = 3.570 / (1/6) = 21.42 km/h