Font size
WorksheetsSCI-101 Midterm Practice
Total questions: 21
Worksheet time: 11mins
What is the calculation for mechanical advantage on this inclined plane:
The mechanical advantage of an inclined plane is equal to the length of the slope divided by the height of the inclined plane.
The mechanical advantage of an inclined plane is equal to the length of the slope added by the height of the inclined plane.
The mechanical advantage of an inclined plane is equal to the length of the slope divided by the height of the inclined plane.
The mechanical advantage of an inclined plane is equal to the length of the slope subtracted by the height of the inclined plane.
What is the mechanical advantage for this inclined plane:
MA = 1
MA = 2
MA = 3
MA = 4
F = ma
What is the force of a box pushing down on the floor if it has a mass of 100 kg?
98 N
980 N
9.8 N
1,980 N
Calculate the mechanical advantage of this pulley.
4:1
2:5
4:2
1:6
Which of the following types of energy is kinetic?
chemical
potential
nuclear
mechanical
Gasoline has which type of energy?
chemical
potential
nuclear
mechanical
What is the acceleration of a 100 kg object that exerts a force of 500 Newtons?
15 s2m
5 s2m
50 s2m
0.5 s2m
The specific type of simple machine in the diagram is called a
class 1 lever
class 2 lever
class 3 lever
Speed and velocity are exactly the same in physics.
True
False
Bob pushes the box with the force of 50 Newtons. The distance traveled by the box is 10 meters. How much work did he do?
50 Joules
100 Joules
400 Joules
500 Joules
There are two wrecking balls: A and B. "A" has a shorter chain than "B." If each of these wrecking balls hung from the crane at the yellow pulley, which statement would be true?
Ball A would have more potential energy than Ball B.
Ball A would be higher than Ball B.
Ball A and Ball B would have gravity acting on them.
All of the above statements are true.
Are the following correctly matched units of measure?
Force = Newtons
Work = Joules
Acceleration = meters/second2
Mass = kilograms
Energy = Joules
Yes
No
A vehicle with balanced forces on it could be... (Select all that apply.)
standing still
moving at a constant speed
accelerating (speeding up)
decelerating (slowing down)
Which formula would you use to measure the energy of a speeding truck?
EK = 1/2 mv2
EP = mgh
A swing hangs 2 meters above the ground from a tree, but it is not moving. If the energy exerted by the swing is 100 Joules, then what is the approximate mass of the swing?
EK = 1/2 mv2
EP = mgh
4 kg
5 kg
6 kg
7 kg
Consider the forces acting on a person sitting on a stool. The forces are shown in the picture.
The correct physics term to use for the force of the chair that is pushing up on the man is...
bouyant
normal
friction
lift
Which of the following is NOT a source of Potential Energy>
a car battery
a plate of spaghetti
a moving car
the nucleus of an atom
The mechanical advantage of a screw is equal to it's ___.
pitch
throw
catch
safe
The mass of an object is 100 kg. The object is placed on top of a 3-meter-high concrete barrier. What is the type of energy it is exerting and what is the value of that energy?
potential energy = 3000 Joules
kinetic energy = 3000 Joules
potential energy = 450 Newtons
kinetic energy = 450 Newtons
The items shown are all examples of
inclined planes
wedges
levers
pulleys
The sum of all of the movement an object makes over the surface of the earth is called
distance
direction
dynamics
displacement
