Part 1: Identify A and T for the cosine function shown in (Figure 3). Express your answer as the amplitude (in m) followed by the period (in s), separated by a comma. Part 2: The amplitude of the wave in Part A is tripled and the period is cut in half. Which of the following graphs correctly illustrates this?

part C: What is the position of the ball at t=2.70s for the motion represented by the scenario in Part B? Express your answer to three significant figures.

b would be the answer

prolly a beacuse the momentuem the car has increases while going down hill

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.