Question

1. ______ is the fundamental property that makes all matter oppose any force that would cause a change in its motion.

a) curvilinear
b) inertia
c) translatory
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1. your older brother tells you his paper airplane has inertia. what does this mean?

a) it will stay in flight unless something stops it, or it will stay still unless something moves it.
b) it will require a lot of force to get it to fly
c) it is too heavy to stay in the air for more than a few seconds
d) it has too much resistance to fly more than a few feet from his hand
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1. why dont skateboarders keep flying through the air when they launch off a ramp?

a) the force of gravity works against the skateboarders inertia
b) skateboard wheels dont spin fast enough to keep them moving very far.
c) the skateboarders have no inertia when they launch off a ramp.
d) skateboards do not use newtons to move around ramps

Explanation:

Question 22

The question is about a fundamental property of matter related to opposing changes in motion. In physics (a subfield of Natural Science), inertia is defined as the property of matter that resists changes in its state of motion. Curvilinear refers to a type of motion along a curved path, and translatory refers to motion where all points of a body move the same distance in the same time. So the correct option is B.

Inertia is the tendency of an object to resist changes in its state of motion. This means an object at rest stays at rest, and an object in motion stays in motion (in a straight line at constant velocity) unless acted upon by a net external force. Option A correctly describes this: the paper airplane will stay in flight (motion) unless something stops it, or stay still (at rest) unless something moves it. Option B is incorrect as inertia isn't about the amount of force needed to start motion (that's related to mass and force, but inertia is about resistance to change). Option C is incorrect as inertia isn't about weight or time in air. Option D is incorrect as it refers to resistance (like air resistance) not inertia.

When skateboarders launch off a ramp, they have inertia (tendency to keep moving). But gravity is a force that acts on them, pulling them down. So gravity works against their inertia (which would make them keep moving in a straight line at the velocity they had when launching). Option B is incorrect as wheel spin isn't the reason. Option C is incorrect as all matter has inertia. Option D is incorrect as Newtons are a unit of force, and skateboards do experience forces (including gravity and friction). So the correct option is A.

Answer:

B) Inertia

Question 23