Question

an athelete completes a round of a circular track of diameter 14 m in 20 sec calculate the distance travelled by the athlete & displacement of the athlete at the end of 1 minute and 10 seconds?

Answer 1

Answer:

• radius of circle=7m
• so circumference= 2πr=14π
• so in 20 sec, athlete will cover a distance of 14π
• But he will returns to his initial position,so displacement will be zero
• In 1 min.10 sec ie 70 sec,he will cover a distance of 49π m
• His displacement will be 7π m