A car moving at a rate of 72 km per hr. How does it moves if it stop after 4 seconds?

So the distance covered is 80meters

Explanation:

Speed=72km/h=20m/s

Time=4seconds

Distance covered=?

As we know that

Speed=distance covered/time taken

Speed*time taken=distance covered

Putting values

Distance covered=20m/s*4s

Distance covered =80meters

I hope it will help you

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.