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WorksheetsForces and Motion Quiz (8)
Total questions: 25
Worksheet time: 6hrs 15mins
If Earth's mass doubled, your weight would ____________.
increase because gravity increases.
decrease because gravity increases.
increase because gravity decreases.
not change because you are still on Earth.
Two forces act on an object. One force has a magnitude of 10 N and is directed toward the north. The other force has a magnitude of 5 N directed toward the south. The object experiences a net force of _________.
5 N south
15 N north
50 N north
5 N north
A reference point for determining position and motion could be ________ (select all that apply)
Earth's surface
a building
a moving object
all of the above
A car traveling 20m/s south enters a new highway going east at 20m/s. The car has _______________.
not changed its velocity
decreased its speed
accelerated
changed its speed
Acceleration is a change in ____________
speed
velocity
direction
all of the above
A plane passes over Pugville with a velocity of 8,000 m/s north. The plane passes over Logantown at a velocity of 10,000 m/s north 40 seconds later. What is the plane's acceleration from Pugville to Logantown?
2,000 m/s north
2,000 m/s/s north
50 m/s/s north
50 m/s north
Gravitational force increases as ______________.
acceleration increases
distance increases
mass increases
velocity increases
For motion to occur ___________________.
a net force must be greater than zero
an unbalanced force must be exerted
acceleration must be created
all of the above
When gravitational force changes _______________.
mass changes
weight changes
the weight stays the same
direction always changes
If three balls of different materials were dropped at the same time from the same height, which would hit the ground first? (ASSUME THERE IS NO AIR RESISTANCE)
a tennis ball
a solid steel ball
a solid rubber ball
they would all hit at the same time
As long as the net force on a falling object is NOT zero, the object ______________.
falls at a constant velocity
accelerates downward
does not move
Use Newton's second law of motion to calculate the acceleration of a 7 kg mass if a force of 68.6 N acts on it.
0.1 m/s/s
9.8 m/s/s
68.6 m/s/s
480.2 m/s/s
Pick the best explanation of why it's important to know a tornado's VELOCITY:
Velocity describes the speed only; so it's important to know how fast the tornado is traveling so you can calculate when it will hit.
Velocity is a vector; so it describes the magnitude and direction of the tornado which is important to know how fast and where it's moving to.
Trick question, you do not need to know a tornado's velocity, only it's magnitude (how strong it is).
Name two ways to increase the acceleration of an object:
decrease mass and increase force
decrease mass and decrease force
increase mass and increase force
increase mass and decrease force
If you drive 100 km/hr for six hours, how far will you go?
16.67 km
0.06 km
600 km
60 km
Every year I drive to Chicago Illinois. It is 570 km away. If I average 100 km/hr, how much time will I spend driving?
57000
0.175
5.7
570
Use this Free Body Diagram to answer the question:
This is a Free Body Diagram of a laptop on a table being pushed to the right with acceleration.
Name the force that is colored BLUE:
Air Resistance
Normal
Natural
Gravitational
Use this Free Body Diagram to answer the question:
This is a Free Body Diagram of a laptop on a table being pushed to the right with acceleration.
Name the force that is colored GREEN:
Friction
Natural
Applied
Gravitational
"The distance between starting point and ending point in a given direction" is the definition for which vocabulary word?
displacement
inertia
distance traveled
unbalanced force
"a force that causes an object to accelerate" is the definition for which vocabulary word?
inertia
velocity
balanced force
unbalanced force
"the tendency of an object to resist change of motion (ie: stays at rest)" is the definition for which vocabulary word?
force
inertia
gravity
Newtons 3rd Law
"a push or pull" is the definition for which vocabulary word?
gravity
displacement
force
friction
"for every action there is an equal and opposite reaction" is the definition for which vocabulary word?
unbalanced force
Newton's 1st Law
Newton's 2nd Law
Newton's 3rd Law
"the force that one surface exerts on another when the surfaces rub against each other" is the definition for which vocabulary word?
normal
gravity
inertia
friction
"the force of gravity acting on a mass" is the definition for which vocabulary word?
mass
weight
normal
force
