Question

a particle moves over three quarters of a circle of a radius r.what is the displacement

Answer 1

Explanation:

here is your answer mark me as brainlist

Answer 2

Answer:

√2r²

Explanation:

Radius of circle =r

Body moves over 3 quarters

Magnitude of displacement = the hypotenuse of the 4th quarter whose Base and perpendicular r both = r unit.

Then,

(Hypotenuse)² = base² +perpendicular²

H² =r² +r²

H^2=2r²  

H=√2r²

The magnitude of its displacement √2r²