Question

A car moves in a semi circular track of radius 700 m. If it starts from one end of the track and stops at the other end, then the displacement of the car is
a)2200m
b)700m
c)1400m
d)1500m​

Answer 1

Answer:

c. 1400m

Explanation:

$distance = \frac{1}{2} (circumference)$

$= \frac{1}{2} \times 2\pi \: r$

$= \pi \: r$

$= 700\pi \:$

$displacement \: = 2 \: r$

$= 2 \times 700$

$= 1400m$