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WorksheetsReview Physics quiz
Total questions: 64
Worksheet time: 46mins
Which of the following produces least friction?
Sliding friction
Rolling friction
Composite friction
Static friction
Friction always
opposes motion
helps motion
Friction can be reduced to low friction by using
oil
grease
powder
all of these
--------is push or pull which stops or moves or changes the direction of an object
force
gravity
inertia
pressure
Smooth surface has
less friction
sometimes less sometimes more
more friction
no friction
It is difficult to walk on an oily floor because
floor gets spoiled
there is more resistance
force of friction is high
force of friction is less
A matchstick struck on a matchbox catches fire easily because
Friction may cause fire
Of chemical reaction
Force heated the match stick
none of these
Just after she jumps out of the plane (before the parachute opens). The relative forces will be
Balanced
Unbalanced
Just after she jumps out of the plane (before the parachute opens). The relative forces will be
Weight force is equal to the friction force
Friction force is constant
Weight force is greater that the friction force
Friction force is greater than the weight force
When a parachute canopy is opened more drag is created because:
It has a large mass
It has a large surface area
It is travelling at terminal speed
The person is now vertical
Identify true statements:
Drag is increasing
Velocity is increasing
There is no drag
Weight is increasing
Deceleration
Parachutes slow you down by creating a large enough surface area that is designed to create a huge amount of ________.
Lift
Thrust
Drag
weight
Basketball free fall as the same rate at the balloon?
True
False
Not correct answer
Acceleration due to gravity on Earth is...
10 m/s/s
9.81 m/ s2
9.8 m/s/s/s
98 m/ s2
how much distance {d} is covered over a period of time {s}
An object's change in position relative to a reference point.
work
force
motion
energy
Resistance to change.
power
force
inertia
energy
A contact force is from
objects physically touching
far apart objects
not touching object
always a pull
This game of tug of war is an example of _________ forces.
unbalanced
balanced
potential
net zero
What will the net force on the soccer ball be?
50 N to the left
50 N to the right
200 N to the left
200 N to the right
1. SI unit of force is
joule
ampere
kilogram
newton
What is Gravity?
anything that has mass and takes up space.
causes objects to move slower.
a change in a objects position.
a force that pulls objects towards.
1. What causes objects to move in a circular motion?
Unbalanced Force
Balanced Force
Centripetal Force
Velocity
3. Sally set her book on the edge of the table and it fell off. Which force caused it to fall to the ground?
Momentum
Friction
Velocity
Gravity
The repelling or attracting force between a magnet and a iron.
Magnetic Force
Electrical Force
Gravity
speed or
kinetic energy
acceleration
Is the force of attraction that causes an apple to fall to the ground
Tension force
Applied force
Gravitational force
Normal force
Push or pulling forces can change an objects motion.
True
False
Used to measure the force gravity.
Weight
Mass
Upward force exerted by a fluid that opposes the weight of a submerged body
Tension
Applied Force
Buoyant Force
The earth is surrounded by the ......... up to a height of many miles
water
soil
air
atmosphere
The SI unit of pressure is the ...........
Pascal
Pierre
Newton
MOM
The pressure on the bottom of an object is ........... the top.
equal to
less than
greater than
What is pressure?
Force exerted on a surface per unit area
force exerted on a surface per unit mass
speed exerted on a surface per unit area
gravity exerted on a surface per unit area
If the man and the ball travels 90 m in 9 seconds, what is their average speed?
10 m/s
180 m/s
99 m/s
10 meters
Formula for resultant force
Newton's second law
F= a x t
F = a x s
F= m x a
W = m x g
newtons first law
stationary = Inertia
Momentum= moving at constant velocity
stationary = continue moving
F= m x a
newtons second law
F= m x t
F= m x a
F= a x t
F= s x t
Why do scientist explore the world?
They are nosey
They are curious
For the money
for fun
According to our lesson, to investigate means to
hire a detective
read about the subject
look for answers
experiment
When you see the prefix "bio" you know the word relates to ...
life
space
rocks
energy
The type of science that include black holes
geology
botany
astronomy
physics
The ability of a fluid to exert an upward force on an object placed in it.
Density
Weight
Buoyancy
Gravity
What is the direction of buoyancy force?
Upwards
Downwards
Sideways
A car drifts around a turn. What is providing the centripetal force to keep the car from spinning out of the circle?
Gravity
The Normal Force
Weight
Friction
Indicate which of the following statements are true regarding an object experiencing uniform circular motion. Check all that apply.
A force always works to STOP the object from moving out of the circle
There is NO acceleration of the object is pointed in a line tangential to the circle
The object moves at a constant speed
Both the force and acceleration of the object faces towards the center of the circle causing centripetal force
What is the Equation we have been working?
Y=mx+b
F=m x a
a2 + b2 = c2
Equation?
What is Newton's First Law of Motion
Every action has an equal and opposite reaction
F = m x a
An object at rest stays at rest, an object in motion stays in motion unless acted on by a net external force
All of the above
What definition describes Thrust?
Primarily created by the wings and must overcome weight for the aircraft to become airborne.
Caused by friction and differences in air pressure.
Created by a propeller, jet engine, or rocket; and moves the aircraft in the direction of its motion
Result of Earth’s gravitational pull.
