How do i solve and find the answer?

vf=vi+at

vf=6.5m/s+(.92m/s^2)(3.6s)

vf=9.81m/s  final velocity

x=v*t

x=9.81m/s*3.6s=35.3m Final displacement

sonar - device which is used to find the submit submarines, sankalp ship. sonar waves consists of a transmitter and detector which are installed in the observation centre on board of a ship. the ultrasonic waves are sent into the sea at high frequency about 1000 khz in all direction.

i think it because equal matrices have equal dimensions, only square matrices can be symmetric. for all indices and . every square diagonal matrix is symmetric, since all off-diagonal elements are zero. in linear algebra, a real symmetric matrix represents a self-adjoint operator over a real inner product space.