A0.495 kg bird pushes itself upward with a 7.28 n force. including its weight, what is the total force acting on the bird? (unit=n)

2.42 N

Explanation:

The total force is the upward 7.28 N force minus the weight.

7.28 N − (0.495 kg) (9.81 m/s²)

7.28 N − 4.86 N

2.42 N

7788.08 m/s

Explanation:

Assuming the orbit of the satellite around the Earth is a circular orbit, we can use the equation of velocity in the case of uniform circular motion:

(1)  

Where:

is the velocity of the satellite

is the Universal Gravitational Constant

is the mass of the Earth

is the radius of the orbit, which is the distance from the center of the Earth to the satellite

Substituting the known values in the equation:

(2)  

(3)  This is the orbital velocity of the satellite

As you may note, this result is not among the given options. In fact, physically these options are not logic if we are talking about the orbit of a satellite around the Earth. This is because the satellite must have a considerable orbital velocity in order to keep orbiting and avoid falling to the Earth surface due to its gravitational field and atmosferic drag (since this is a low orbit satellite, according to the given orbital height).