A rocket motor is used for different model rockets that have different masses the results of tests for a rocket motor are shown in the table given the same amount of force which conclusion is correct. A. Increased mass results in reduced acceleration
B. Acceleration increases regarding to mass
C. Mass increases with acceleration
D. Mass and acceleration have a direct relationship

where are the vectors ?

close lines strong magnet less close weaker

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.