1. A race car moves along a circular track of radius 100m at a velocity of 25m/s. (a) What is the time taken to complete one lap of the circular track. (b) What is the time taken for 10
laps.

Given :

A race car moves along a circular track of radius 100m at a velocity of 25m/s.

To Find :

(a) What is  the time taken to complete one lap of the circular track.

(b) What is the time taken for 10  laps.

Solution :

Circumference of circular track,

a) Time taken to complete one lap is :

b) Time taken to complete 10 laps is :

Hence, this is the required solution.

according to jean piaget, in what stage of cognitive development are children able to understand conservation task?

b. preoperational

just took it