When a constant force acts upon an object, the acceleration of the object varies inversely with its mass. When a certain constant force acts upon an object with mass 8 kg, the acceleration of the object is 7 /ms2. If the same force acts upon another object whose mass is 28 kg, what is this object's acceleration?

The acceleration of 28 Kg object will be 2

Explanation: Force acting on an object is defined as mass times acceleration acting on it.

Mathematically it is defined as:

Force = mass acceleration

F = 8 7 = 56 N

If the same force is acting on a 28 Kg object then the acceleration of the object will be equals to force to mass ratio.

Acceleration = = 2

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.