Question

100
15 km
an object repeats its motion
When an obis
Periodic motion
Period
c
curvilinear
Answer in one word :
Device used to measure distance​

Answer 1

Answer:

We know that 1 km = 1000 m

∴ 5 km = 1000 × 5 = 5000 m

(iii) Motion of a child on a swing is periodic.

Explanation: Motion which repeats itself after certain intervals is called periodic motion. Since the motion of a swing also repeats after regular intervals so, the motion of child on a swing is periodic.

(iv) Motion of the needle of a sewing machine is periodic.

Explanation: The needle of a sewing machine while moving up and down, repeats its motion after regular intervals so it possesses periodic motion.

Answer 2

Answer:

Odometer

Explanation:

This is the correct answer