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Worksheets8th Grade Accelerated Science Unit 2 Physics-Motion
Total questions: 61
Worksheet time: 1hrs 2mins
What is a force?
The Distance Traveled per time.
A push or a pull
The force that supports an object against gravity
The sum of all Forces on an object
What is the difference between speed and Velocity?
Speed is always a greater number.
Speed is always a smaller number.
Velocity is speed with direction.
Speed is velocity with a direction
What is the equation for speed?
Time * Distance
Distance/time
Time/distance
Distance-time
What is the tendency of an object to remain either at rest or in a state of constant motion?
Force
Speed
Inertia
Velocity
Newtons first law of motion states that
F=m*a
An object at rest remains at rest
The bigger the mass of an object, the more gravity it has
Every object has a force
What is the equation for Newton's second law?
Acceleration=(final Velocity-initial Velocity)/time
Force=mass*acceleration
Pressure=force/area
Speed= distance/time
Which vocabulary word means the rate at which velocity changes with time?
Velocity
Acceleration
Speed
Momentum
Which vocabulary word means motion under the influence of gravitational pull only?
Terminal Velocity
Free fall
Acceleration
Terminal Speed
Which vocabulary word means frictional resistance due to motion through air?
Air resistance.
Velocity
Mass
Terminal velocity
The momentum of an object depends upon the object's ___________&_____________.
Size and Shape
Mass and Velocity
Mass and Speed
Mass and Energy
Which has more momentum: a car stopped at a red light or a bike moving at 15 mph?
The Car
The Bike
They have the same momentum.
Can't be determined with the given information
Which Variable do we use to describe momentum?
M
T
V
P
This scientist was the first to make observations that explain the force Gravity
Newton
Galileo
Rutherford
Gravis
A moving car has momentum. If it moves twice as fast, its momentum is _____.
Twice as much
Three times as much
Halved
The same
Projectile motion is made up of two components what are they?
Left and Right
Up and down
First and Second
Horizontal and Vertical
A soccer ball is sitting in the middle of a field. The ball will remain at rest until an outside force like a players foot or the wind acts upon it. Which of Newton's laws is represented by this?
1st
2nd
3rd
Think about pushing a shopping cart and a car. If you apply the same amount of force to both, the shopping cart will travel fast, but the car will hardly move. To move the car you would need a larger force. Which of Newton's laws is being represented?
1st
2nd
3rd
A 20-N force and a 15-N force act on an object in opposite directions. What is the net force on the object?
(a)
electricity
magnetism
friction
gravity
Friction is a force that acts in a/an ___________ direction of movement.
similar
opposite
parallel
upward
Which direction will the box move?
To the left
To the right
Upwards
Downwards
Match the following Types of Friction to their descriptions
Static Friction
Pushing a stationary car
Slide Friction
Sledding down a hill
Fluid Friction
A plane flying through the air
Rolling Friction
A skateboarder going down a ramp
When does Friction Occur?
When an object Falls
When two objects collide
When two objects are close by each other
When two objects rub together
being at rest
traveling at light speed
balance
pushing or pulling
What happens when two forces act in the same direction?
They cancel each other out.
The stronger one prevails.
Their strengths are added.
Their sum divided by two is the total force.
The greater the mass of an object,
the easier the object starts moving.
the greater its inertia.
the more balanced it is.
the more space it takes up.
The force of gravity on a person or object on the surface of a planet is called
mass.
terminal velocity.
weight.
free fall.
The force that one surface exerts on another when the two rub against each other is called __________.
friction.
acceleration.
inertia
gravity.
The law of universal gravitation states that any two objects in the universe that have mass, without exception,
attract each other.
repel each other.
combine to provide a balanced force.
create friction.
Forces can be added together only if they are
acting on the same object
balanced forces.
unaffected by gravity.
substantial.
In a game of tug-of-war, you pull on the rope with a force of 100 N to the right and your friend pulls on the rope with a force of 100 N to the left. What is the net force on the rope?
100 N to the right
0 N
100 N to the Left
1 N upward
A 5-kg cart accelerates at a rate of 2 m/s2. What is the net force acting on the cart?
10 N
7 N
2.5 N
3 N
The overall force on an object after all the forces are added together is called the (a) force.
The force of gravity between you and Earth is greater than the force of gravity between you and a car because Earth has more (a) than the car.
According to Newton’s third law of motion, the strength of a reaction force is (a) the strength of the action force.
A golf ball (a) when either its speed or direction changes.
A speed-versus-time graph can be used to analyze the motion of an accelerating object.
True
False
The property of matter that resists a change in motion is called inertia.
True
False
According to Newton’s second law of motion, weight depends on an object’s mass and the net force acting on the object.
True
False
Friction depends on the types of surfaces involved and how hard the surfaces push together.
True
False
Mass and air resistance affect the gravitational attraction between objects.
True
False
What is the acceleration in the first ten seconds?
(15m/s - 0m/s) / 10s =
4 m/s2
1.5 m/s2
10 m/s2
0 m/s2
In which part of the graph is the object slowing down?
A
B
C
D
Karina is slowing down on her skateboard. She starts at a speed of 5.5m/s and slows to 1.0 m/s over a time of 3.0 seconds. What is Karina's acceleration?
-1.5 s2m
8.5 m/s
-2.5 m/s
4.5 km/s
A dog runs with an initial speed of 7.5 m/s on a waxed floor. It slides to a stop in 15 seconds. What is the acceleration in m/s2?
(a)
A drag racer accelerated from 0 m/s to 200 m/s in 5 s. What was the acceleration in m/s2?
(a)
The equation for POTENTIAL ENERGY is
PE = mass x gravity x height
PE = gravity x weight
PE = height / work
PE = work / time
Gravity always causes objects to
Repel Each Other
Attract Each other
Circle Each other
Bounce off of each other
Match the following root to its meaning
Aero
Air
Graph
Write
Hydro
Water
Kin
Move
Libr
Balance
Match the following Root to its meaning
Mono
One
Bi
Two
Tri
Three
Quad
Four
Vers
Turn
