Spike daims that dimensional analysis shows that the correct expression for change in velocity, ange in velocity, vy . v," is vy-v, =ー, where m is , s where mis Spike claims that dimensional analysis shows that the correct expression for ch ML mass, t is time, and F is the magnitude of force. Carla says that can't be true because the dimensions of force are l \ 1 which one, if either, is correct?

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.

answer( sicar );

i think its d if wrong im sorry