Julius von mayer was a doctor and physicist who discovered that energy is conserved by studying his patients on an ocean voyage. james prescott joule was a physicist who also discovered that energy is conserved in an experiment with weights and a paddle in water. how does this illustrate the relationship between multiple approaches and the same result? scientists do not need to work in the same discipline. scientists must be able to understand multiple disciplines. scientists in different disciplines do not all need to gather data. scientists must use very different experiments.

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.

answersysvol bloat;