Question

Q1. Short Type Questions:

a. The school of a boy from his home is 1 km to the east. When he reaches

back home, he says that he had traveled 2 km distance but his displacement is zero. Justify your answer.

b. Under what condition, the average speed is equal to the magnitude of the average velocity.

c. Can the average speed of a moving body be zero?

d. Can the average velocity of a moving body be zero? State examples.

e. A car covers a distance of 5 km in 20 mins. Find the velocity of the car in (1) km/min (2) m/s (3) m/min (4) km/hr.​

Answer 1

Answer:

a) answer :‐Yes because the displacement is zero if you travel the path twice and you reach the same point while the distance is sum of distance travelled.

b) answer:‐The magnitude of the average velocity of an object equal to its average speed