The previously accepted theory that was proven incorrect is the Geocentric Theory, which placed Earth at the center of the universe. This idea was introduced by philosopher Ptolemy. He formulated this hypothesis based on his observations that celestial bodies such as the Sun, stars, and the moon appeared to move around Earth from our vantage point. However, Galileo Galilei contradicted this notion with his Heliocentric Theory. He used a telescope to observe that Venus undergoes phases, akin to the moon, leading him to conclude that the alignment of Venus, Earth, Moon, and Sun did not support the earlier theory.
According to Newton's first law, an object remains at rest until an external force acts upon it, or an object in motion continues to move at a constant speed without accelerating.
Thus, x can solely represent a body coming to a halt. Accordingly, the last option is the most correct.
Answer:
The horizontal distance d that the ball covers before it lands is 1.72 m.
Explanation:
Given,
Height of ramp 
Height of bottom of ramp 
Diameter = 0.17 m
We need to determine the horizontal distance d the ball travels before landing.
We need to calculate the time
Using the equation of motion




Next, we can find the ball's velocity
Using the kinetic energy formula



By applying the conservation of energy



We substitute the values into the equation


Next, we determine the horizontal distance d the ball travels before landing
Using the distance formula

Where. d = distance
t = time
v = velocity
We substitute the values into the formula


Thus, the horizontal distance d that the ball travels before it lands is 1.72 m.
Answer:
The power used by raul's microwave must match the power consumed by katrina's because both microwaves took different durations to accomplish the same heating task.
Explanation:
The power output from a car engine is equivalent to that of a bicycle since both perform the same amount of work over time. Both raul and katrina shared a frozen meal, heating each portion in different microwaves. Katrina's portion was warm in one minute, whereas raul's portion required two minutes. Therefore, the power utilized by raul's microwave aligns with that of katrina's, given that it took longer to achieve the same result.