Acar is stopped at a red light. when the light turns green, the car accelerates until it reaches a final velocity of 45 m/s. it takes the car 12 s to reach this speed. how far does the car travel during this time.

Speed at the beginning  =  zero

Speed after 12 seconds  =  45 m/s

Average speed during the 12 seconds  =  (1/2) · (0 + 45)  =  22.5 m/s

Distance covered in 12 seconds at an average speed of 22.5 m/s  :

Distance = (speed) x (time)

Distance = (22.5 m/s) x (12 sec)

Distance   =  270 meters  

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.

the aurora is formed when charged particles emitted from the sun during a solar flare penetrate the earth's magnetic shield and collide with atoms and molecules in our atmosphere. these collisions result in countless little bursts of light, called photons, which make up the aurora.

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