Question

An athlete completes one round of circular track of diameter 700 m calculate distance travelled in half round and displacement in half round

Answer 1

Answer:

distance covered = 1100 meter

displacement = 700 meter

Step by step explanations :

given that,

An athlete completes one round of circular track of diameter 700 m

here,

diameter of the circular track = 700 m

so,

radius = ½ × diameter

= ½ × 700

so,

radius of the circular track = 350 m

now,

to find,

displacement and distance covered in half rotation

distance covered = total path length

here,

total path length = πr

where,

r is the radius of the circular track,

putting the values,

22/7 × 350

= 1100 m

so,

distance covered by the Athlete = 110 m

displacement = shortest length

here,

displacement = diameter of the track,

so,

diameter = 700 meter,

so,

displacement of the Athlete = 700 meter

___________________

distance covered by the Athlete

= 1100 m

displacement of the Athlete

= 700 meter

Answer 2

$\bold {\huge {Your ~answer :-}}$

$\huge {\boxed {\bold {\color {red} {1100\:m, \:700\:m}}}}$

--------------------------------------------------

EXPLANATION—

Given-

diameter of track - 700 m

Therefore Radius— d/2=350 m

Now

For full round the distance or circumference = 2πR

For completing the half round of circle, the distance covered will be half of circumference of the circle i.e., d =πR

HERE, d = distance

Now putting radius

$d = \frac{22}{7} \times 350$

d = 22 × 50

d = 1100 m

Therefore the distance covered half round = 1100 m

--------------------------------------------------

Displacement is the shortest distance between initial and final position, so the displacement will be just the diameter of circle. S = 2R =d

Here, displacement =S

And d= diameter

S = 2×350 = 700 m

Therefore the displacement covered in half round = 700 m

$\huge{\red{\ddot{\smile}}}$