A car that is traveling west at a constant rate has ____ (1 point)
A car that is traveling west at a constant rate has a constant velocity.
To determine what the car that is traveling west at a constant rate has, we need more information. "____ (1 point)" suggests that the question might be multiple-choice and we need to select the correct answer. However, without the available choices, it is not possible to provide a specific answer.
If you have the multiple-choice options, please provide them, and I'll be happy to help you select the correct answer.
A car that is traveling west at a constant rate has a velocity in the west direction.
While playing her soccer game, Samantha runs down the field at 10 meters per second. She has a constant speed and does not change direction. What is Samantha’s acceleration?(1 point)
The acceleration is 10 m/s^2 because her velocity did not change.
The acceleration is 0 m/s^2 because her velocity increased.
The acceleration is 10 m/s^2 because her velocity increased.
The acceleration is 0 m/s^2 because her velocity did not change.
The correct answer is: The acceleration is 0 m/s^2 because her velocity did not change.
Two forces act on an object. One force has a magnitude of 10 N directed north, and the other force has a magnitude of 2 N directed south. What is the net force on the object?(1 point)
8 N south
8 N north
12 N south
25 N north
To determine the net force on an object, you need to subtract the forces acting in the opposite direction. So, in this case, the force of 2 N directed south is opposite to the force of 10 N directed north. Therefore, the net force is the difference between these forces: 10 N - 2 N = 8 N directed north.
The correct answer is: 8 N north.
An object at rest remains at rest. An object in motion remains in motion unless acted upon by an outside force. This describes which of Newton’s Laws of Motion?(1 point)
First and Third Laws of Motion
Second and Third Laws of Motion
Second Law of Motion
First Law of Motion
This describes Newton's First Law of Motion.
The correct answer is: First Law of Motion.
Suppose 25 children who weigh the same are playing a game of tug-of-war. Five children pull with 10 newtons of force, while ten children pull with 15 newtons of force in the opposite direction. How can one determine the net force on the rope?(1 point)
The newtons are in the same direction, so the newtons can be multiplied.
The forces are in the same direction, so the newtons can be added.
The forces are in opposite directions, so the newtons can be subtracted.
The forces are in opposite directions, so the newtons can be divided.
To determine the net force on the rope, you need to consider the direction of the forces. In this case, the forces from the five children pulling with 10 newtons and the ten children pulling with 15 newtons are in opposite directions.
To find the net force, you need to subtract the forces acting in the opposite direction. So, the net force on the rope would be 15 N - 10 N = 5 N directed in the direction of the 15 N force.
The correct answer is: The forces are in opposite directions, so the newtons can be subtracted.
Which example shows an object acted on by two balanced forces?(1 point)
A baseball rolling to a stop
A car moving at a constant speed in a constant direction
A snowflake landing on a roof
A skateboard rolling down a hill with increasing speed
An object acted on by two balanced forces is one where the forces are equal in magnitude and opposite in direction.
Out of the given examples, the correct answer would be: A car moving at a constant speed in a constant direction.
In this case, the car experiences balanced forces because the force of friction acting in the opposite direction is equal and opposite to the force propelling the car forward, thereby resulting in a constant speed.
Speed, unlike acceleration or velocity, does NOT specify _______.(1 point)
Direction
Time
Mass
Distance
Speed, unlike acceleration or velocity, does not specify direction.
The correct answer is: Direction.