# Balanced and unbalanced forces on motion

## Quiz by Claudia Barnhill

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12 questions
• Q1
What is an unbalanced force?
A force that stops motion completely
A force that does not cause any motion
A force that only affects stationary objects
A force that causes a change in motion
30s
• Q2
What is a balanced force?
A force that stops motion completely
A force that only affects stationary objects
A force that causes a change in motion
Two or more forces that cancel each other out and do not cause a change in motion
30s
• Q3
What is the relationship between a balanced force and an unbalanced force?
A balanced force and an unbalanced force both cause a change in motion.
A balanced force and an unbalanced force always have the same magnitude.
A balanced force and an unbalanced force always have opposite directions.
A balanced force does not cause a change in motion, while an unbalanced force does.
A balanced force and an unbalanced force have no relationship.
30s
• Q4
What is the net force when two balanced forces act in the same direction?
The net force is zero.
The net force is the sum of the two forces.
The net force is the difference between the two forces.
The net force is twice the magnitude of one of the forces.
The net force is the average of the two forces.
30s
• Q5
Which of the following statements is true about balanced and unbalanced forces?
Unbalanced forces cancel each other out.
Balanced forces only affect stationary objects.
Balanced forces result in no change in motion.
Unbalanced forces lead to motion in a straight line.
Balanced forces always cause a change in motion.
30s
• Q6
What happens to an object when the forces acting on it are balanced?
The object accelerates in the direction of the net force.
The object immediately comes to a complete stop.
The object starts moving in the opposite direction of the net force.
The object spins around uncontrollably.
The object remains at rest or continues moving at a constant speed in a straight line.
30s
• Q7
What happens to an object when the forces acting on it are unbalanced?
The object starts moving in the opposite direction.
The object remains at rest or continues moving at a constant speed.
The object experiences a change in motion.
The object immediately comes to a complete stop.
The object spins in a circular motion.
30s
• Q8
What is the result of applying balanced forces to an object?
Decreased speed of the object
Complete stop of the object
Change in direction of the object
No change in motion
Increased speed of the object
30s
• Q9
Which of the following statements is true about unbalanced forces?
Unbalanced forces cause a change in motion.
Unbalanced forces always result in no motion.
Unbalanced forces have the same effect as balanced forces.
Unbalanced forces only affect stationary objects.
Unbalanced forces cancel each other out.
30s
• Q10
What is the net force when two unbalanced forces act in opposite directions?
The net force is the sum of the two forces.
The net force is the difference between the two forces.
The net force is the average of the two forces.
The net force is zero.
The net force is twice the magnitude of one of the forces.
30s
• Q11
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---
can accelerate faster than the other two vehicles
needs a large amount of force to move
is traveling in the opposite direction from the other two vehicles
is traveling on a curve in the road
30s
• Q12
Which of the following best describes the velocity of an object?
30 m/s^2
30 m east
30 m/s east
30 m/s
30s

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