Question 1

What is an unbalanced force?

Accepted Answer

A force that causes a change in motion

Answer

A force that stops motion completely

Answer

A force that does not cause any motion

Answer

A force that only affects stationary objects

Question 2

What is a balanced force?

Accepted Answer

Two or more forces that cancel each other out and do not cause a change in motion

Answer

A force that stops motion completely

Answer

A force that only affects stationary objects

Answer

A force that causes a change in motion

Question 3

What is the relationship between a balanced force and an unbalanced force?

Accepted Answer

A balanced force does not cause a change in motion, while an unbalanced force does.

Answer

A balanced force and an unbalanced force both cause a change in motion.

Answer

A balanced force and an unbalanced force always have the same magnitude.

Answer

A balanced force and an unbalanced force always have opposite directions.

Answer

A balanced force and an unbalanced force have no relationship.

Question 4

What is the net force when two balanced forces act in the same direction?

Accepted Answer

The net force is the sum of the two forces.

Answer

The net force is zero.

Answer

The net force is the difference between the two forces.

Answer

The net force is twice the magnitude of one of the forces.

Answer

The net force is the average of the two forces.

Question 5

Which of the following statements is true about balanced and unbalanced forces?

Accepted Answer

Balanced forces result in no change in motion.

Answer

Unbalanced forces cancel each other out.

Answer

Balanced forces only affect stationary objects.

Answer

Unbalanced forces lead to motion in a straight line.

Answer

Balanced forces always cause a change in motion.

Question 6

What happens to an object when the forces acting on it are balanced?

Accepted Answer

The object remains at rest or continues moving at a constant speed in a straight line.

Answer

The object accelerates in the direction of the net force.

Answer

The object immediately comes to a complete stop.

Answer

The object starts moving in the opposite direction of the net force.

Answer

The object spins around uncontrollably.

Question 7

What happens to an object when the forces acting on it are unbalanced?

Accepted Answer

The object experiences a change in motion.

Answer

The object starts moving in the opposite direction.

Answer

The object remains at rest or continues moving at a constant speed.

Answer

The object immediately comes to a complete stop.

Answer

The object spins in a circular motion.

Question 8

What is the result of applying balanced forces to an object?

Accepted Answer

No change in motion

Answer

Decreased speed of the object

Answer

Complete stop of the object

Answer

Change in direction of the object

Answer

Increased speed of the object

Question 9

Which of the following statements is true about unbalanced forces?

Accepted Answer

Unbalanced forces cause a change in motion.

Answer

Unbalanced forces always result in no motion.

Answer

Unbalanced forces have the same effect as balanced forces.

Answer

Unbalanced forces only affect stationary objects.

Answer

Unbalanced forces cancel each other out.

Question 10

What is the net force when two unbalanced forces act in opposite directions?

Accepted Answer

The net force is the difference between the two forces.

Answer

The net force is the sum of the two forces.

Answer

The net force is the average of the two forces.

Answer

The net force is zero.

Answer

The net force is twice the magnitude of one of the forces.

Question 11

The three vehicles shown below are all traveling at a speed of 15 m/s, but only the pickup truck has a changing velocity. The pickup truck has a changing velocity because the pickup truck---

Accepted Answer

is traveling on a curve in the road

Answer

can accelerate faster than the other two vehicles

Answer

needs a large amount of force to move

Answer

is traveling in the opposite direction from the other two vehicles

Question 12

Which of the following best describes the velocity of an object?

Accepted Answer

30 m/s east

Answer

30 m/s^2

Answer

30 m east

Answer

30 m/s

Question 13

A meteor moving 468 km per minute traveling in a south-to-north direction passed near Earth in 2013. Because the meteor was only 45 m wide and was 27,700 km above Earth’s surface, it was not visible without the aid of a telescope. Which statement describes the meteor’s motion?

Accepted Answer

Its velocity was 7.8 km/s northward

Answer

Its speed was 468 km/s northward.

Answer

Its acceleration was 468 km/s^2

Answer

Its acceleration was 7.8 km/s^2

Question 14

What is the difference between the velocity and the speed of an object?

Accepted Answer

Velocity has a direction associated with it, while speed has no specific direction

Answer

Velocity is the change in distance over time, while speed is the change in velocity over time.

Answer

Velocity is the change in speed over time, while speed is the change in distance over time.

Answer

Velocity has no direction associated with it, while speed has a specific direction.

Question 15

Acceleration is the rate of chance of velocity or a change in motion.

Accepted Answer

True

Answer

False

Question 16

Speed is the distance an object travels over a certain time.

Accepted Answer

True

Answer

False

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