Weegy: Copernicus's model of the universe differs from Ptolemy's because Copernicus believed Earth rotates on its axis and orbits the sun.
User: What do scalars measure?
Weegy: Scalars measure magnitude.
User: A car travels from Boston to Hartford in 4 hours. The two cities are 240 kilometers apart. What was the average speed of the car during the trip?
Weegy: 240/4=60
Thus, the average speed of the car was 60 km/hour.
User: Newton's Second Law of Motion addresses the relationship between what two variables that influence the force on a body?
Weegy: Newton's Second Law of Motion addresses the relationship between Mass and acceleration that influence the force on a body.
User: A car with two people traveling down the road has a mass of 100 kg and a velocity of 5 m/s. The car pulls over and picks up two people. The mass of the car is
now 150 kg. What is the new momentum if the velocity stays the same?
Weegy: A car with two people traveling down the road has a mass of 100 kg and a velocity of 5 m/s. The car pulls over and picks up two people. The mass of the car is now 150 kg. The new momentum if the velocity stays the same is 750 kg m/s. Solution: p = m * v p = 100 kg * 5 m/s p = 500 kg. m/s
User: If the velocity of a body changes from 13 m/s to 30 m/s while undergoing constant acceleration, what's the average velocity of the body?
Weegy: If the velocity of a body changes from 13 m/s to 30 m/s, the average velocity is the sum of the initial and final velocity divided by 2. The average velocity is ((13+30)/2) m/s = 21.5 m/s.
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