Question

A particle is moving along a regular pentagon of side a if it is a Startup found. Find the resultant when it is reached at point c​

Answer 1

Answer:

√1.4a

Step-by-step explanation:

The angle between two adjacent sides of a regular Pentagon is108°

since,

R=√A^2+B^2+2ABcos theta

R=√a^2+a^2+2a×a cos 108°

R=√2a^2 -0.6a^2 (since cos108°= -0.3)

R=√1.4a^2

R=a√1.4

HOPE IT HELPS!!!!