Juan inflates a balloon and then releases its end to let the balloon go free as air comes out. the balloon then flies around the room. which statement describes how this example is an application of newton’s laws of motion? according to newton’s first law of motion, the balloon continues moving until the forces on it are balanced. according to newton’s third law of motion, the balloon is pushed forward as the air is forced out. according to newton’s third law of motion, the balloon resists any change of motion unless an unbalanced force acts upon it. according to newton’s second law of motion, the balloon exerts a force on the air, which exerts a force back on the balloon.

the simple machine has three main features. they are:

fulcrum is the center point or pivot point of the machine. effort is input force/ applied force. load is external force/ output.

the keisha 's machine labels are

x : load

y: fulcrum

z: lever

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.