Question

the minute hand of a clock is 7 cm long. Find the displacement and distance covered by ot from 9:00am to 9:30am​

Answer 1

Answer:

FROM 9 A.M. TO 9:30 A.M. ANGLE BETWEEN ANGLE MADE IS EQUAL 180°. 44 / 2 = 22 CM. DISTANCE COVERED BY THE MINUTE HAND FROM 9 A.M. TO 9:30 A.M. IS 22 CM.

Explanation:

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Answer 2

Answer:

Explanation:

DISPLACEMENT = STRAIGHT LINE FROM INITIAL POSITION TO FINAL POSITION.

WE KNOW THAT FROM 9 A.M. TO 9:30 A.M. THERE IS AN ANGLE OF 180 DEGREE WHICH FORMS A STRAIGHT LINE THAT CAN BE SAID AS A DIAMETER OF CIRCLE WHOSE RADIUS IS 7 CM LONG.

SO,

DISPLACEMENT = DIAMETER = 7×2 = 14 CM

DISTANCE IS THE ACTUAL LENGTH COVERED BY AN OBJECT. IT CAN BE CIRCULAR PATH, CURVED PATH, STRAIGHT LINE ETC.

FROM 9 A.M. TO 9:30 A.M. ANGLE BETWEEN ANGLE MADE IS EQUAL 180°.

CIRCUMFERENCE OF CIRCLE OF RADIUS 7 CM = 2 X 22 / 7 X 7 = 44 CM

44 / 2 = 22 CM.

DISTANCE COVERED BY THE MINUTE HAND FROM 9 A.M. TO 9:30 A.M. IS 22 CM.