Question

Roni walks straight north for 100 m, then returns south on a 70 m path. Which statement is true based on Roni's journey?

a.roni covered a distance of 30 m
b.roni covered a distance of 200 m
c.displacement carried out by Roni 30 m
d.displacement carried out by Roni 700 m

Answer 1

Answer:

c) displacement carried out by Roni 30m

Explanation:

Distance is the measure of “how much ground an object has covered during its motion”

while

displacement refers to the measure of “how far out of place is an object.” A displacement is a vector whose length is the shortest distance from the initial to the final position of a point P undergoing motion

Roni first walk straight north 100m and then return on a 70m path

hence, he covered a distance of 100+30=130m path.

So, option (a) and (b) are wrong

As Roni returns by the same path

displacement= 30m north from his initial position