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WorksheetsForces Review
Total questions: 57
Worksheet time: 1hrs 8mins
If the net force is equal to zero, the forces acting on the object are
balanced
unbalanced
A contact force is from
objects physically touching
far apart objects
not touching object
always a pull
A non-contact force is between
two objects that aren't touching
two objects that are touching
the ground and wheels
you and me
The three examples pictured are of
Non-contact Forces
Contact Forces
The force between the phone and the mount is a
contact force
non-contact force
Gravity is a
Contact Force
Myth
Non-contact Force
Friction is a
Contact Force
Myth
Non-contact Force
You are pulled to the surface of the earth due to the force of _________________
gravity
friction
normal force
contact force
Air Resistance Force
Contact Force
Non-Contact Force
Which describes Newton's 2nd Law?
An object at rest will stay at rest, and object in motion will stay in motion
for every action, there is an equal and opposite reaction
acceleration is produced when a force acts on a mass
Newton's 1st Law states,________________________.
F=ma
Every action has an equal and opposite reaction
An object at rest stays at rest, an object in motion stays in motion.
Friction
Why does an truck have more inertia than a bicycle?
it has more mass
it has more volume
it is not as aerodynamic
What is Inertia?
motion
An object's resistance to change in motion
friction
An object's resistance to motion
Your car has a mass of 2000 kg and a force of 4000 N. How fast will it accelerate?
20 m/s2
0.5 m/s2
2 m/s2
120 N
A 25 kg bike accelerates at 10 m/s2. What was the force?
250 N
2.5 N
25 N
15 N
If an object was accelerating at 5 m/s2, and a force of 10 newtons was required to accelerate it, what was the object's mass?
50 kg
2 kg
0.5 kg
5 kg
If an astronaut has a mass of 60 kg on earth, what would their mass be on the moon under 1/6th gravity?
60 kg
10 kg
60 N
10 N
When two equal forces act in opposite directions on an object, they are called ______________________.
frictional force
balanced force
centripetal force
gravitational force
The picture is an example of Newton's...
1st Law
2nd Law
3rd Law
An object is being pulled to the right with a 500N force, while a force of 250N is pulling it to the left. This unbalanced force causes it to accelerate at a rate of 5 m/sec2. What is the mass of the object?
250kg
1,250kg
50kg
100kg
Newton’s law states that for every action, there is an ________ reaction.
unequal and opposite
equal and similar
stronger and opposite
equal and opposite
When a small car pushes a big truck, the truck applies an equal and opposite force on the car.
False
True
When a cannon fires a cannonball we observe Newton's third law. Which is the reaction force?
The cannon moving forward
The cannon moving backwards
The cannonball moving backwards
The cannonball moving forward
Action reaction forces never cancel each other out because
They act on different objects.
They act on the same objects
They do not act on objects.
Action-reaction pairs can cause a change in motion.
True
False
When a heavy football player and a light one run into each other, who exerts more force
The light one
Their force are equal
The heavy one
The nozzle of a rocket is pointed downward so that as fuel is ignited, the exhaust pushes downward. Why is this arrangement necessary for a rocket to function properly?
The rocket is protected from the heat of the exhaust.
Burned fuel can be collected on the ground.
As fuel is combusted, the rocket pushes the gases backward and the gases push the rocket forward.
This allows the rocket to be steered properly.
If the person is pushing backwards with the paddle, why do they move forward?
The person will actually move backwards, they need to paddle the other way
The water pushes back with an equal and opposite force
The person is pushing harder than the water
The water pushes back with a greater force than the person
A book rests on a table. The force of gravity pulls down on the book with a force of 20N. What prevents the book from falling down into the ground?
The table and the book are pushing back with an acceleration of 9.8m/s2.
The table pushes back up on the book with a force greater than 20N
The inertia of the book is equal to the inertia of gravity
The table pushes back up on the book with an equal and opposite force of 20N
If you push a skateboard with a force of 8 N and your mass is 80 kg, what is the force that the skateboard exerts on you?
75 N
8 N
7N
10 N
What is the type of force in a rope when the rope is stretch by a weight?
Tension
Gravitational force.
Upthrust.
Thrust.
The force which acts perpendicular to the table, and which supports the computer resting on the table is called ........... force
balanced
unbalanced
Normal
Tension
What is the normal force exerted by the ground on a 65-kg metal bar?
65 N
640 N
-65 N
-640 N
The normal force on an object is a consequence of which law?
First Law of Motion
Second Law of Motion
Third Law of Motion
Law of Universal Gravitation
Force always come in________
waves
triplets
pairs
A baseball player hits a ball with 400 N of force. How much force does the ball exert on the bat?
300
400
500
Not enough info to tell
If you weigh 1000 N and hang from a pair of ropes, what is the force of tension in each rope?
1000 N
10 N
500 N
Not enough info to tell
