|
|
|
1.
|
One way to increase acceleration is by
A. | increasing mass. | B. | increasing both force and mass
proportionally. | C. | decreasing mass. | D. | decreasing
force. |
|
|
|
2.
|
Which of the following is an example of increasing friction intentionally (on
purpose)?
A. | adding grease to gears on a bike | B. | oiling a squeaky door | C. | waxing
skis | D. | throwing sand on an icy driveway |
|
|
|
Elias applies a force to a box filled with heavy books sitting on a level
floor. Friction also exerts a force on the box.
|
|
|
3.
|
Refer to the information above. If the box is moving, ____.
A. | friction is not being overcome | B. | the applied force is greater than
friction | C. | no work is being done | D. | friction is greater than the applied
force |
|
|
|
4.
|
Refer to the information above. If the box will not move, ____.
A. | the applied force is greater than friction | B. | friction is greater
than the applied force | C. | friction is being overcome | D. | the force applied to
the box is zero |
|
|
|
5.
|
Refer to the information above. If the stationary box begins to move,
____.
A. | it experiences no changes in velocity or acceleration | B. | its velocity
changes, but its acceleration does not change | C. | it is accelerating | D. | its acceleration is
zero |
|
|
|
6.
|
According to Newton’s third law of motion, when a hammer strikes and
exerts force on a nail, the nail
A. | moves at a constant speed. | B. | disappears into the wood. | C. | exerts a force back
on the hammer. | D. | creates a friction with the hammer. |
|
|
|
These people are playing a game of tug-of-war. Each team exerts a force on
the other team.
|
|
|
7.
|
Refer to the diagram and the description given above. If both teams exert equal
force on each other, what will happen?
A. | Neither team will be affected by the force of gravity. | B. | Neither team will
change its direction of motion. | C. | Neither team will be affected by the force of
friction. | D. | Both teams will change their direction of motion. |
|
|
|
8.
|
Study the description and the diagram of the game above. In what direction is
the net force exerted if team B wins the game?
A. | straight downward | B. | toward team A | C. | straight
upward | D. | toward team B |
|
|
|
9.
|
The force of gravity on a person or object at the surface of a planet is known
as
A. | mass. | B. | air resistance. | C. | inertia. | D. | weight. |
|
|
|
10.
|
The force that one surface exerts on another when the two rub against each other
is called
A. | acceleration. | B. | gravity. | C. | inertia. | D. | friction. |
|
|
|
11.
|
The product of an object’s mass and velocity is called its
A. | acceleration. | B. | momentum. | C. | force. | D. | inertia. |
|
|
|
A bus, truck, car, and motorcycle are traveling along a highway. The
vehicles are moving in a group in the same direction. All of the vehicles are slowing from a speed of
35 miles per hour (mph) to a speed of 0 mph as they near a red light. The mass, in
kilograms (kg), of each vehicle is shown in the chart below.
Mass of
Vehicles |
Vehicle |
Mass
(kg) |
| Bus |
2700 |
| Truck |
1500 |
| Car |
1000 |
| Motorcycle |
350 |
| |
|
|
|
12.
|
Refer to the data table and the description above. Rank the vehicles from the
greatest to least amount of force needed to bring them to a complete stop.
A. | truck, car, bus, motorcycle | B. | bus, car, motorcycle, truck | C. | bus, truck, car,
motorcycle | D. | motorcycle, car, truck, bus |
|
|
|
13.
|
Study the data table and the description above. Which vehicle requires the
GREATEST force to stop?
A. | the bus | B. | the truck | C. | the
car | D. | the motorcycle |
|
|
|
14.
|
Study the table and the description given above. Which vehicle can be stopped
with the LEAST amount of force?
A. | the car | B. | the bus | C. | the
truck | D. | the motorcycle |
|
|
|
15.
|
The tendency of an object to resist any change in its motion is known as
A. | balance. | B. | mass. | C. | force. | D. | inertia. |
|
|
|
16.
|
The gravitational force between objects depends upon several factors. How would
the gravitational attraction between two objects change if the distance between the objects
increased?
A. | The gravitational attraction would increase. | B. | The gravitational
attraction would decrease. | C. | The gravitational attraction would decrease at
first, then increase. | D. | The gravitational attraction would not
change. |
|
|
|
17.
|
According to the law of conservation of momentum, when two objects collide in
the absence of friction,
A. | momentum is not lost. | B. | velocity decreases. | C. | only the object with
the larger mass continues on. | D. | velocity
increases. |
|
|
|
18.
|
Air resistance is a type of
A. | motion. | B. | acceleration. | C. | velocity. | D. | friction. |
|
|
|
19.
|
What happens when two forces act in the same direction?
A. | The stronger one cancels out the weaker one. | B. | They add
together. | C. | They cancel each other out. | D. | Their sum divided by two is the total
force. |
|
|
|
20.
|
The law of universal gravitation states that any two objects in the universe,
without exception,
A. | repel each other. | B. | combine to provide a balanced
force. | C. | create friction. | D. | attract each
other. |
|
|
|
21.
|
Which of the following is an example of rolling friction?
A. | your shoes on a sidewalk as you walk | B. | a boat on the water as it
sails | C. | bike tires on the road as you ride | D. | two hands rubbing
together |
|
|
|
22.
|
The force that pulls falling objects toward Earth is called
A. | gravity. | B. | free fall. | C. | air
resistance. | D. | acceleration. |
|
|
|
23.
|
Force equals mass times
A. | inertia. | B. | speed. | C. | motion. | D. | acceleration. |
|
|
|
24.
|
The amount of matter in an object is called its
A. | mass. | B. | balance. | C. | weight. | D. | force. |
|
|
|
25.
|
How can you increase the momentum of an object?
A. | by decreasing its velocity | B. | by decreasing its
acceleration | C. | by increasing its friction | D. | by increasing its
mass |
|
|
|
26.
|
Wearing a seat belt while traveling in a car is required in many locations.
Based on Newton’s first law of motion, which is also sometimes called the law of inertia,
explain why wearing a seat belt is important to passenger safety.
|
|
|
27.
|
Which law can explain how gases released from burning fuel in a rocket produce
thrust?
A. | Newton’s first law of motion | B. | Newton’s second law of
motion | C. | the law of conservation of momentum | D. | Newton’s third law of
motion |
|
|
|
28.
|
The greater the mass of an object,
A. | the more balanced it is. | B. | the more space it takes up. | C. | the easier the
object starts moving. | D. | the greater its
inertia. |
|
|
|
29.
|
The boy is pushing the children on a sled. If one child gets off of the sled,
which of these will happen?  A. | More force will be needed to move the sled. | B. | No force will be
needed to move the sled. | C. | The amount of friction acting on the sled will
not change. | D. | Less force will be needed to move the sled. |
|
|
|
30.
|
The gravitational force between objects depends upon several factors. How would
the gravitational attraction between two objects change if the mass of both objects increased?
A. | The gravitational attraction would not change. | B. | The gravitational
attraction would increase. | C. | The gravitational attraction would
decrease. | D. | The gravitational attraction would increase at first, then
decrease. |
|
|
|
31.
|
Two football players on opposing teams push against each other during a play.
Player A exerts a force of 957 Newtons. Player B exerts a force of 987 Newtons. What is the
net force, in Newtons, exerted by player B?
|
|
|
32.
|
The overall force on an object after all forces are added together is known as
the ______________.
A. | unbalanced force | B. | centripetal force | C. | net
force | D. | balanced force |
|
|
|
33.
|
When two equal forces act on the same object in opposite
directions, the net force is
A. | greater than either force. | B. | smaller than either force. | C. | equal to each of the
forces. | D. | zero. |
|
|
|
34.
|
If a 1000 kg train is traveling at a velocity of 1 m/s, what velocity will give
a 2 kilogram rock the same momentum as the train? (Answer whole number - NO unit - number
only)
|
|
|
35.
|
Forces can be added together only if they are
A. | balanced forces. | B. | acting on the same object. | C. | unaffected by
gravity. | D. | substantial. |
|
|
|
36.
|
In physical science, a push or a pull is called a(n)
A. | acceleration. | B. | inertia. | C. | force. | D. | motion. |
|
|
|
Mrs. Perez pushes a cart through the grocery store. She adds groceries to
the cart as she shops.
|
|
|
37.
|
Study the description and the picture above. Why is more force needed to move
the cart at the end of the shopping trip than at the beginning?
A. | The temperature of the cart increases as groceries are added to
it. | B. | The total mass of the cart increases as groceries are added to
it. | C. | The total mass of the cart decreases as groceries are added to
it. | D. | The distance the cart moves increases constantly during the trip.
|
|
|
|
38.
|
A force can exist between two objects without those objects being in contact.
What force is at work when the planet Venus revolves about the Sun?
A. | gravitational force | C. | magnetic force | B. | effort force | D. | electrical
force |
|