Which statement is true about unbalanced forces?(1 point)
Responses
They only change an object's speed.
They only change an object's speed.
They only change an object's direction.
They only change an object's direction.
They can change both an object's speed and direction.
They can change both an object's speed and direction.
They have no impact on an object in motion.
They can change both an object's speed and direction.
Two people apply a force to a box from opposite directions as shown in the picture below. The box does not move. Which statement best explains why the box does not move?
(1 point)
Responses
The box is experiencing unbalanced forces.
The box is experiencing unbalanced forces.
The forces have different magnitudes.
The forces have different magnitudes.
Balanced forces do not cause motion.
Balanced forces do not cause motion.
Push forces do not cause motion.
The forces have different magnitudes.
What is the unit used for measuring force?(1 point)
Responses
newton
newton
kilometer
kilometer
gram
gram
joule
joule
newton
Which example shows unbalanced forces acting on an object?(1 point)
Responses
Two people are on opposite sides of a large box. Both people push the box with equal force.
Two people are on opposite sides of a large box. Both people push the box with equal force.
Two people are on the same side of a large box. One person pushes the box and the other pulls the box with equal force.
Two people are on the same side of a large box. One person pushes the box and the other pulls the box with equal force.
Two people are on opposite sides of a large box. Both people pull the box with equal force.
Two people are on opposite sides of a large box. Both people pull the box with equal force.
Two people are on the same side of a large box. Both people pull the box with equal force.
Two people are on the same side of a large box. One person pushes the box and the other pulls the box with equal force.
A person tries to push a refrigerator across the kitchen. She applies as much force as possible, but she cannot make the refrigerator move.
Which statement BEST describes by the refrigerator does not move?
(1 point)
Responses
The person does not apply enough force to the refrigerator, so the forces are still balanced.
The person does not apply enough force to the refrigerator, so the forces are still balanced.
The person applies too much force to the refrigerator, and now the forces on the refrigerator are unbalanced.
The person applies too much force to the refrigerator, and now the forces on the refrigerator are unbalanced.
The person applies too much force to the refrigerator, and now the forces on the refrigerator are balanced.
The person applies too much force to the refrigerator, and now the forces on the refrigerator are balanced.
The person does not apply enough force to the refrigerator, so the forces are unbalanced.
The person does not apply enough force to the refrigerator, so the forces are still balanced.
The correct statement is: "They can change both an object's speed and direction."
To understand why this is the correct statement, we need to understand the concept of unbalanced forces. Unbalanced forces are forces that are not equal or opposite in direction, causing a change in the object's motion.
When there is an unbalanced force acting on an object, it will experience acceleration. Acceleration is the rate at which the object's velocity changes. Velocity is a combination of an object's speed and direction.
So, unbalanced forces can result in a change in an object's speed by either increasing or decreasing it. Additionally, unbalanced forces can also change the direction in which the object is moving by altering its velocity.
Hence, the statement "They can change both an object's speed and direction" is true about unbalanced forces.