Inertia is(1 point)
Responses
a force that acts on a resting object.
a force that acts on a resting object.
the resistance of an object to change its motion.
the resistance of an object to change its motion.
an object's motion.
an object's motion.
a moving object's speed and direction.
a moving object's speed and direction.
The correct answer is: the resistance of an object to change its motion.
You are sitting in a stopped bus. When the bus starts moving forward, you appear to move backward relative to the bus. Which statement best explains this observation?(1 point)
Responses
The bus moves forward, while inertia keep you in place.
The bus moves forward, while inertia keep you in place.
The force of inertia on you balances the force from the motion of the bus.
The force of inertia on you balances the force from the motion of the bus.
The motion of the bus creates an unbalanced backward force on you.
The motion of the bus creates an unbalanced backward force on you.
Inertia prevents the force of the bus from acting on you.
The correct answer is: The bus moves forward, while inertia keeps you in place.
Which statement best explains why a paper airplane eventually falls to the ground?(1 point)
Responses
The unbalanced forces of air resistance and gravity slow the airplane and pull it down.
The unbalanced forces of air resistance and gravity slow the airplane and pull it down.
The force from throwing the airplane loses strength as the airplane moves.
The force from throwing the airplane loses strength as the airplane moves.
Inertia acts as a balanced force that slows the airplane and pulls it down.
Inertia acts as a balanced force that slows the airplane and pulls it down.
Inertia creates the new forces acting on the airplane to keep it up.
Inertia creates the new forces acting on the airplane to keep it up.
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The correct answer is: The unbalanced forces of air resistance and gravity slow the airplane and pull it down.
The correct answer is: the resistance of an object to change its motion.
The correct answer is: the resistance of an object to change its motion.
To understand why inertia is the resistance of an object to change its motion, we can refer to Newton's first law of motion, also known as the law of inertia. This law states that an object at rest will remain at rest, and an object in motion will continue moving at a constant velocity, unless acted upon by an external force.
In other words, when no external force acts on an object, its velocity will not change. This property of objects is called inertia. It is the tendency of an object to resist any change in its state of motion. The greater the inertia of an object, the more resistance it will have to changes in its velocity.
To determine the correct answer, we can eliminate the options that are not related to inertia. The options "a force that acts on a resting object" and "an object's motion" are incorrect because they do not capture the resistance aspect of inertia. The option "a moving object's speed and direction" is incorrect because it only describes the characteristics of a moving object, not the resistance to change in velocity.
Therefore, the only remaining option, "the resistance of an object to change its motion," accurately describes what inertia is.