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)

Question

Responses

The force of inertia on you balances the force from the motion of the bus.

The bus moves forward, while inertia keep you in place.
The bus moves forward, while inertia keep you in place.

Inertia prevents the force of the bus from acting on you.
Inertia prevents the force of the bus from acting on you.

The motion of the bus creates an unbalanced backward force on you.
The motion of the bus creates an unbalanced backward force on you.

Answer 1

The statement that best explains this observation is:

The bus moves forward, while inertia keeps you in place.

When the bus starts to move, your body tends to remain in its original state of rest due to inertia, which is the tendency of an object to resist changes in its state of motion. Thus, as the bus moves forward, you appear to move backward relative to the bus.

Answer 2

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.

Answer 3

The statement that best explains why a paper airplane eventually falls to the ground is:

The unbalanced forces of air resistance and gravity slow the airplane and pull it down.

As the paper airplane moves through the air, it experiences an upward lift (if thrown correctly), but it is also subject to gravity pulling it down and air resistance opposing its motion. Eventually, gravity and air resistance create an unbalanced force that causes the airplane to slow down and eventually fall.