Worksheets1214 Final Review 3
Total questions: 23
Worksheet time: 12mins
Which of the following represents a force?
5 N
5 N kg
5 m/s/s
5 kg m/s
A 10-N force and a 30-N force act on an object in opposite directions. What is the net force on the object?
20 N
10 N
40 N
30 N
An object is traveling across a horizontal surface at a constant velocity. Therefore it will have
no acceleration
no weight
no mass
no velocity
The gravitational force, Fw or Fg, exerted on you by the Earth is usually called your ___.
acceleration
gravity
mass
weight
What is the force of a surface on an object (acts perpendicular to surface)?
tension
applied
friction
normal
Which of these diagrams represents the forces on an object at rest on an incline?
The law of inertia applies to __________.
both objects in motion and objects at rest.
no objects.
objects at rest.
objects in motion.
The acceleration produced by a net force on an object is __________.
directly proportional to the magnitude of the net force.
inversely proportional to the mass of the object.
in the same direction as the net force.
all three other options are true.
An object that experiences positive acceleration has a net force that is__________.
negative
positive
not enough information to determine
zero
A block is dragged at constant velocity by a force of 6 N. What is the frictional force between the block and the surface?
less than 6 N
need more information to say
more than 6 N
6 N
A player catches a ball. Consider the action force to be the impact of the ball against the player's glove. What is the reaction to this force?
friction of the ground against the player's shoes
the player's grip on the glove
the force the glove exerts on the ball
none of the above
The static friction force is
the force needed to keep an object moving at a constant velocity across a surface.
equal to the net force.
the minimum force required to overcome static friction and move an object.
the force needed to bring an object to rest.
A 0.2 kg baseball is struck with a force of 100 N from a baseball bat. What will be the acceleration of the ball while it is in contact with the bat?
.002 m/s/s
500 m/s/s
20 m/s/s
5000 m/s/s
A classmate is attempting to draw a free body diagram for a box being pushed across the floor at a constant speed. The image below is what they have drawn so far. Which (if any) of their forces have been drawn incorrectly?
There is nothing wrong with the free body diagram.
The friction force should be in the same direction as the applied force.
The normal force should be larger than the force of gravity.
The applied force should be the same size as the friction force.
In physics, work is defined as __________.
force divided by distance.
force times time.
force times distance.
force divided by time.
The unit of work is the __________.
Joule
Newton
meter
Watt
The amount of potential energy possessed by an elevated object is equal to __________.
the work done in lifting it.
the force needed to lift it.
the power used to lift it.
the distance it is lifted.
An arrow in a bow has 70 J of potential energy. Assuming no loss of energy due to heat, how much kinetic energy will it have after it has been shot?
0 J
140 J
35 J
70 J
What are the units for measuring force?
N kg
m/s/s
N
kg m/s
If you lift two loads up one story, how much work do you do compared to lifting just one load up one story?
one half as much
four times as much
the same amount
twice as much
Kinetic energy of an object is equal to __________.
its mass multiplied by its acceleration.
one half the product of its mass times its speed squared
its mass multiplied by its speed.
one half the product of its mass times its speed.
Work is a transfer of
motion.
energy.
mass.
force.
The energy of motion is called
work.
kinetic energy.
thermal energy.
potential energy.
