A 72-kg skydiver is falling from 10000 feet. At an instant during the fall, the skydiver encounters an air resistance force of 540 Newtons. The acceleration of the skydiver at
this instant is
m/s2

Approximately (assuming that the acceleration due to gravity is.)

Explanation:

Assuming that the weight on this 72-kg skydiver would be (points downwards.)

Air resistance is supposed to act in the opposite direction of the motion. Since this skydiver is moving downwards, the air resistance on the skydiver would point upwards.

Therefore, the net force on this skydiver should be the difference between the weight and the air resistance on the skydiver:

.

Apply Newton's Second Law of motion to find the acceleration of this skydiver:

.

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.

insects!

explanation: