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- 1. Multiple Choice
A group of students is playing tug-of-war. The students on both sides of the rope are pulling with equal force so that the rope is not moving. This is an example of..

unbalanced forces

balanced forces

acceleration

displacement

- 2. Multiple Choice
A firefighter feels the hose pushing backwards onto him as he uses it to put out a fire. What is the most likely cause of this?

The hose material is very elastic.

Since the hose is at rest, it tends to stay at rest.

The force exerted on the water equals the mass of the water times its acceleration.

The escaping water exerts an equal and opposite force on the hose.

- 3. Multiple Choice
4 different weights are listed below. If the same force is applied to each of them, which one will have the LEAST acceleration?

m = 0.5 kg

m= 0.75 kg

m = 1.0 kg

m = 7.3 kg

- 4. Multiple Choice
Which of the following is measured in Newtons?

weight

momentum

mass

acceleration

- 5. Multiple Choice
The upward force on an object falling through the air is ____.

air resistance

momentum

inertia

gravity

- 6. Multiple Choice
The relationship among mass, force, and acceleration is explained by ____.

Law of Conservation of Momentum

Newton's 1st Law of Motion

Newton's 2nd Law of Motion

Newton's 3rd Law of Motion

- 7. Multiple Choice
According to Newton’s laws, for any object, the greater the force that's applied to it, the greater its ____ will be.

acceleration

inertia

gravity

size

- 8. Multiple Choice
The size of the gravitational force between two objects depends on their ____.

frictional forces

inertia

masses and the distance between them

speed and direction

- 9. Multiple Choice
An astronaut is planning a trip to a newly-discovered planet. According to the Law of Universal Gravitation, the astronaut's weight on the new planet will be greater than his weight on Earth

**if**:the new planet has less gravity than Earth.

the new planet has the same gravity as Earth.

the new planet has more gravity than Earth.

the gravity of the planet doesn't matter. Weight is the same everywhere in the universe.

- 10. Multiple Choice
"To every action there is an equal and opposite reaction" describes which law?

Law of Conservation of Momentum

Newton's 1st Law of Motion

Newton's 2nd Law of Motion

Newton's 3rd Law of Motion

- 11. Multiple Choice
Calculate the

**force**on an object that has a mass of 10 kg and an acceleration of 4 m/s^{2. }40 N

8 N

2.5 N

0.4 N

- 12. Multiple Choice
A 500 N force is applied to a 25 m/s2 object. The

**mass**of the object is ____.12,500 m/s

12,500 kg

20 m/s

20 kg

- 13. Multiple Choice
The ____ of an object does not change, but its _____ can, based on its location.

mass, volume

mass, weight

weight, mass

weight, volume

- 14. Multiple Choice
When two forces on the same object are equal and opposite, these forces are called _____ forces.

net

balanced

unbalanced

frictional

- 15. Multiple Choice
As the mass of an object increases, its inertia will ________.

decrease

increase

stay the same

be unable to determine

- 16. Multiple Choice
Which two quantities are measured in the same units?

velocity and acceleration

weight and force

mass and weight

force and mass

- 17. Multiple Choice
A student drops a feather and rock at the same time from Mrs. Taylor’s window. If air resistance wasn’t a factor, what should she observe?

The rock falls slower than the feather.

The rock falls faster than the feather.

The rock and feather fall at the same rate.

The rock and feather remain suspended and do not fall.

- 18. Multiple Choice
A man weighing 800 N is standing on a chair. In order to support the man, what

**force**is the chair exerting?less than 800 N

greater than 800 N

800 N up

800 N down

- 19. Multiple Choice
An object that is falling freely has a constant what?

speed

velocity

accleration

nothing is constant

- 20. Multiple Choice
Which of the following

**best**describes how a swimmer moves through the water?The swimmer pushes backwards on the water and the water pushes with an equal but opposite force back on the swimmer.

The swimmer pushes off the side of the pool and his inertia keeps him moving through the water.

The swimmer uses friction to push himself through the water.

Air resistance limits the swimmer’s speed.

- 21. Multiple Choice
An object will move at a constant velocity unless an unbalanced force acts upon it.

Newton’s 2nd law

Newton's 1st Law

Law of Conservation of Momentum

Newton's 3rd Law

- 22. Multiple Choice
Push or pull one body exerts on another.

force

momentum

gravity

air resistance

- 23. Multiple Choice
A friction-like force that opposes the motion of objects that move through the air.

motion

inertia

air resistance

gravity

- 24. Multiple Choice
The highest velocity a falling object will reach.

terminal velocity

inertia

gravity

air resistance

- 25. Multiple Choice
Tendency of an object to resist changes in motion.

velocity

motion

inertia

air resistance

- 26. Multiple Choice
The attraction any two objects have on one another.

inertia

gravity

velocity

terminal velocity

- 27. Multiple Choice
The force of gravity on an object.

velocity

inertia

mass

weight

- 28. Multiple Choice
A net force acting on an object causes the object to accelerate in the direction of the net force.

Newton's 2nd Law

Newton's 3rd Law

Newton's 1st Law

- 29. Multiple Choice
Related to the amount of force needed to change an object’s motion.

weight

mass

momentum

gravity

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