What causes a change in an object's motion?
A change in an object's motion is caused by a force acting upon it. Forces are interactions between two objects that can either push or pull on each other. According to Newton's second law of motion, the net force acting on an object is directly proportional to the rate of change of its momentum. So, forces can either accelerate or decelerate an object, or change its direction of motion. Some examples of forces that can cause a change in motion include gravity, friction, air resistance, and applied forces such as pushing or pulling.
What causes a change in an object's motion?
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balanced force
unbalanced force
acceleration
inertia
The correct answer is unbalanced force. An object's motion can change when there is an unbalanced force acting upon it. Unbalanced forces are forces with a net force that is not zero. When there are unbalanced forces acting on an object, it will either accelerate, decelerate, or change its direction of motion. Balanced forces, on the other hand, do not cause a change in an object's motion. Acceleration and inertia are related concepts but are not the direct causes of change in an object's motion.
What will happen to an object in motion if an unbalanced force does not act on it?
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it will slow down eventually
it will stop
it will keep moving at the same velocity forever
its speed or direction will change
If an unbalanced force does not act on an object in motion, the object will keep moving at the same velocity forever. In the absence of an external force, an object will continue to move with the same speed and in the same direction due to its inertia. This is based on Newton's first law of motion, also known as the law of inertia, which states that an object at rest tends to stay at rest, and an object in motion tends to stay in motion with the same velocity, unless acted upon by an external force. Therefore, without an unbalanced force acting on it, the object's speed or direction will not change.
Inertia is a force.
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True
False
False
What amount of force and magnitude will the rope move?
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Captionless Image
100 N to the left
400 N to the left
300 N to the right
It will not move because the forces are balanced.
The provided information is insufficient to determine the amount of force and magnitude the rope will move. To determine the net force acting on the object, more information about the forces involved is needed. Without additional context or information, it is not possible to determine the direction and magnitude of the force on the rope.
When a ball is thrown up into the air, what two forces are at work?
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Gravity
Air Resistance
Friction
Inertia