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- 1. Multiple-choice5 minutes1 pt
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-choice30 seconds1 pt
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-choice30 seconds1 pt
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-choice30 seconds1 pt
Which of the following is measured in Newtons?
weight
momentum
mass
acceleration
- 5. Multiple-choice30 seconds1 pt
The upward force on an object falling through the air is ____.
air resistance
momentum
inertia
gravity
- 6. Multiple-choice30 seconds1 pt
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-choice30 seconds1 pt
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-choice30 seconds1 pt
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-choice30 seconds1 pt
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-choice30 seconds1 pt
"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-choice30 seconds1 pt
Calculate the force on an object that has a mass of 10 kg and an acceleration of 4 m/s2.
40 N
8 N
2.5 N
0.4 N
- 12. Multiple-choice30 seconds1 pt
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-choice30 seconds1 pt
The ____ of an object does not change, but its _____ can, based on its location.
mass, volume
mass, weight
weight, mass
weight, volume
- 14. Multiple-choice30 seconds1 pt
When two forces on the same object are equal and opposite, these forces are called _____ forces.
net
balanced
unbalanced
frictional
- 15. Multiple-choice30 seconds1 pt
As the mass of an object increases, its inertia will ________.
decrease
increase
stay the same
be unable to determine
- 16. Multiple-choice30 seconds1 pt
Which two quantities are measured in the same units?
velocity and acceleration
weight and force
mass and weight
force and mass
- 17. Multiple-choice30 seconds1 pt
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-choice30 seconds1 pt
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-choice30 seconds1 pt
An object that is falling freely has a constant what?
speed
velocity
accleration
nothing is constant
- 20. Multiple-choice30 seconds1 pt
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-choice30 seconds1 pt
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-choice30 seconds1 pt
Push or pull one body exerts on another.
force
momentum
gravity
air resistance
- 23. Multiple-choice30 seconds1 pt
A friction-like force that opposes the motion of objects that move through the air.
motion
inertia
air resistance
gravity
- 24. Multiple-choice30 seconds1 pt
The highest velocity a falling object will reach.
terminal velocity
inertia
gravity
air resistance
- 25. Multiple-choice30 seconds1 pt
Tendency of an object to resist changes in motion.
velocity
motion
inertia
air resistance
- 26. Multiple-choice30 seconds1 pt
The attraction any two objects have on one another.
inertia
gravity
velocity
terminal velocity
- 27. Multiple-choice30 seconds1 pt
The force of gravity on an object.
velocity
inertia
mass
weight
- 28. Multiple-choice30 seconds1 pt
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-choice30 seconds1 pt
Related to the amount of force needed to change an object’s motion.
weight
mass
momentum
gravity
