A spring scale shows a net force of 0.8 N acting on a 1.5-kg mass. What happens to the acceleration of the object if the net force is decreased to 0.2 N?(1 point)
Responses
The acceleration increases to four times its original value, or about 2.13 m/s2.
The acceleration increases to four times its original value, or about 2.13 m/s 2 .
The acceleration decreases to a quarter of its original value, or about 2.13 m/s2.
The acceleration decreases to a quarter of its original value, or about 2.13 m/s 2 .
The acceleration increases to four times its original value, or about 0.13 m/s2.
The acceleration increases to four times its original value, or about 0.13 m/s 2 .
The acceleration decreases to a quarter of its original value, or about 0.13 m/s2.
The acceleration decreases to a quarter of its original value, or about 0.13 m/s2.
A spring scale shows a net force of 0.8 N acting on a 1.5-kg mass. What happens to the acceleration of the object if the net force is decreased to 0.2 N?(1 point)
Responses
The acceleration increases to four times its original value, or about 2.13 m/s2.
The acceleration increases to four times its original value, or about 2.13 m/s 2 .
The acceleration decreases to a quarter of its original value, or about 2.13 m/s2.
The acceleration decreases to a quarter of its original value, or about 2.13 m/s 2 .
The acceleration increases to four times its original value, or about 0.13 m/s2.
The acceleration increases to four times its original value, or about 0.13 m/s 2 .
The acceleration decreases to a quarter of its original value, or about 0.13 m/s2.
The acceleration decreases to a quarter of its original value, or about 0.13 m/s2.
Use the graph of velocity vs. time for an object to answer the question.
A line graph that displays the change in velocity over time and is broken up into 3 segments. At zero seconds, the velocity is zero meters per second. At 60 seconds, the velocity is 8 meters per second. The time difference between zero and 60 seconds represents the first segment. At 150 seconds, the velocity is 14 meters per second. The time difference between 60 and 150 seconds represents the second segment. At 240 seconds, the velocity is 29 meters per second. The time difference between 150 and 240 represents the third segment.
Which statement fairly compares segment 2 and segment 3?
(1 point)
Responses
Segments 2 and 3 have different periods of time and the force during segment 2 is different than the force during segment 3.
Segments 2 and 3 have different periods of time and the force during segment 2 is different than the force during segment 3.
Segments 2 and 3 have equal periods of time but the force during segment 2 is different than the force during segment 3.
Segments 2 and 3 have equal periods of time but the force during segment 2 is different than the force during segment 3.
Segments 2 and 3 have equal periods of time and the force acting in each segment is the same during each period of time.
Segments 2 and 3 have equal periods of time and the force acting in each segment is the same during each period of time.
Segments 2 and 3 have different periods of time, but the force acting in each segment is the same during each period of time.
Segments 2 and 3 have different periods of time, but the force acting in each segment is the same during each period of time.
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Segments 2 and 3 have different periods of time, but the force acting in each segment is the same during each period of time.
Use the graph to answer the question.
A velocity versus time line graph shows three lines. The vertical axis is labeled, velocity, and the horizontal axis is labeled, time. Line A moves to the right from a point on the vertical axis above the origin parallel to the horizontal axis. Line B slopes upward from the origin to the upper right corner. Line C moves to the right from a point on the vertical axis below the origin parallel to the horizontal axis.
Which quantity or quantities is/are increasing for the object represented by Line B?
(1 point)
Responses
velocity and position
velocity and position
velocity, position, and acceleration
velocity, position, and acceleration
velocity only
velocity only
velocity and acceleration
velocity and acceleration
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velocity and position
The same type of engine is placed in two different airplanes. The first airplane is twice as heavy as the second airplane. Which statement is correct about the mass of the airplane and its acceleration, assuming a constant net force?(1 point)
Responses
Decreasing the mass of the airplane will result in the airplane accelerating more.
Decreasing the mass of the airplane will result in the airplane accelerating more.
Increasing the acceleration of the airplane causes the engine to provide less force.
Increasing the acceleration of the airplane causes the engine to provide less force.
Increasing the acceleration of the airplane causes the engine to provide more force.
Increasing the acceleration of the airplane causes the engine to provide more force.
Decreasing the mass of the airplane will result in the airplane accelerating less.
Decreasing the mass of the airplane will result in the airplane accelerating more.
The harder a gas pedal in a car is pressed, the faster the car’s velocity increases. Which phrase best describes the relationship between how hard the gas pedal is pressed and the acceleration of the car?(1 point)
Responses
There is a negative correlation but no causation.
There is a negative correlation but no causation.
There is a positive correlation but no causation.
There is a positive correlation but no causation.
There is both a negative correlation and causation.
There is both a negative correlation and causation.
There is both a positive correlation and causation.