Question

a cyclist covers two rounds of a circular track if radius 7m. calculate the difference between the distance and the displacement covered by the objects​

Answer 1

Answer:

44m

Explanation: displacement=0                                                                                                       distance=2*perimeter                                                                                                             =2*22*7/7     =44m                                                                                                                difference=44-0  =44m

Answer 2

Given:

Radius of circle = 7m

Find:

Calculate the difference between the distance and displacement covered by the object .

Solution:

Displacement is difined shortest distance between initial and final point.

Here initial and final point are zero because a cyclist cover two rounds.

So

Displacement = 0

Distance = Perimeter of circle

D = 2×2πr

=2× 2×22/7×7

= 44×2

= 88m

Distance =88m

Now

Difference between the distance and displacement.

= DISTANCE-DISPLACEMENT

= 88-0

=88m

ANSWER = 88m