Question

An object moves along a circular path of diameter 14cm with constant speed. If it takes 2 min. to move from a point on the path to the diametrically opposite point. Find (a) The distance covered by the object (b) The speed (c) The displacement (d) average velocity

Answer 1

Answer:

(a) 22 cm

(b) 0.18 m/s

(c) 14 cm

(d) 0.17 m/s

Step-by-step explanation:

[Here we take π = 22/7]

Given diameter 14 cm

So radius is 7 cm

(a) In a circle, two diametrically opposite points are the points which are placed at the two ends of a diameter drawn through these points.

The object travels half the circumference when it goes from one point to its diametrically opposite point.

So distance travelled:

d = 1/2 (2 π r)

= π r

= (22/7)×7

= 22 cm

(b) Speed = distance/time

= 22/120

= 11/60

= 0.18m/s

(c) Displacement is the shortest distance from initial point to fibrous point

So, s = 2r = 14 cm

(d) Average velocity is displacement/ time.

So avg velocity,

= 14/120

= 7/60

= 0.17 m/s

Hope that helps

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Answer 2

Answer:

here is the answer .

hope It will help you .