Question

3. circunference of a circular path is 3l4 m.
AB is its dicimeter A cycligt stasting his
motion . from a reaches B.along the
Circular path .culeutale distance travelled
by him and also find his displacement
( pie r 2 3.14)
B​

Answer 1

Answer:

,

Circumference of circular track=2πr=3140m where r=radius of circle

Now according to question,Scooter moves from A to B along the circular path (where AB is diameter).

It means scooter completes half a revolution(circumference/2).

So,Distance travelled=The actual path traversed by scooter=

2

3140

=1570 m

Again,Displacement=The shortest distance travelled by scooter(Final position−Initial position)

=Diameter of the circle=2r

Since 2πr=3140m (hereπ=3.14)

2r=

3.14

3140

=1000 m.

To calculate the time taken by the scooter in reaching from A to B,we have a formula

Speed=

Time

Distance

Time=

Speed

Distance

=

10

1570

=157 seconds.