In which situation are unbalanced forces acting on an object?(1 point)

Question

Responses

Two people stand on opposite sides of a large tire. Both people pull the tire with equal force.
Two people stand on opposite sides of a large tire. Both people pull the tire with equal force.

Two people stand on the same side of a large tire. Both people pull the tire with equal force.
Two people stand on the same side of a large tire. Both people pull the tire with equal force.

Two people stand on opposite sides of a large tire. Both people push the tire with equal force.
Two people stand on opposite sides of a large tire. Both people push the tire with equal force.

Two people stand on the same side of a large tire. One person pushes the tire and the other pulls the tire with equal force.

Answer 1

Unbalanced forces act on an object when the net force acting on the object is not zero. In the provided scenarios, the situation that involves unbalanced forces is:

Two people stand on the same side of a large tire. One person pushes the tire and the other pulls the tire with equal force.

In this case, while one person is pushing and the other is pulling, the forces are not acting in the same direction, resulting in a net force that is not zero, hence creating unbalanced forces.

Answer 2

What is inertia?(1 point)
Responses

a force that acts on an object at rest
a force that acts on an object at rest

the speed and direction of an object in motion
the speed and direction of an object in motion

an object’s resistance to a change its motion
an object’s resistance to a change its motion

the motion of an object

Answer 3

Inertia is defined as:

an object’s resistance to a change in its motion.

This means 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.

Answer 4

A balloon floats inside a stopped car. When the car starts moving forward, the balloon appears to move backward relative to the car. Which statement best explains this observation?(1 point)
Responses

The motion of the car creates an unbalanced backward force on the balloon.
The motion of the car creates an unbalanced backward force on the balloon.

Inertia prevents the force of the car from acting on the balloon.
Inertia prevents the force of the car from acting on the balloon.

The force of inertia on the balloon balances the force from the motion of the car.
The force of inertia on the balloon balances the force from the motion of the car.

The car moves forward, while inertia keeps the balloon in place.

Answer 5

The statement that best explains the observation is:

The car moves forward, while inertia keeps the balloon in place.

This reflects the concept of inertia, where the balloon tends to remain in its initial state (at rest) while the car accelerates forward. As a result, it appears to move backward relative to the car.

Answer 6

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.

Inertia prevents new forces from acting on the airplane to keep it up.
Inertia prevents new forces from acting on the airplane to keep it up.

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 slows the airplane and pulls it down.

Answer 7

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 travels through the air, gravity pulls it down, and air resistance acts in the opposite direction, ultimately causing the airplane to lose altitude and eventually fall.

Answer 8

According to Newton's First Law, what potential impact can an unbalanced force have on an object in motion? (1 point)
Responses

An unbalanced force will have no impact on an object in motion.
An unbalanced force will have no impact on an object in motion.

An unbalanced force can only change the object's direction.
An unbalanced force can only change the object's direction.

An unbalanced force can change both the object's direction and speed.
An unbalanced force can change both the object's direction and speed.

An unbalanced force can only change the object's speed.

Answer 9

The correct response is:

An unbalanced force can change both the object's direction and speed.

According to Newton's First Law of Motion, an object in motion will remain in motion with the same speed and in the same direction unless acted upon by an unbalanced force. This unbalanced force can lead to changes in both the object's speed and its direction of motion.