Download Physics Practice List the three dimensions that are considered the

Physics Practice
1. List the three dimensions that are considered the fundamental measurements?
Length, Mass, Time
2. List the standard units of the fundamental dimensions for
a. The MKS metric system. Meters, Kilograms, Seconds
b. The English system. Feet, Pounds Mass, Seconds
3. Which of the following measurements are considered derived measurements?
a.
F, C, R, K
b.
in, ft, m, cm
c.
psig, psia, Pa, N
d.
yr, mon, wk, s
4. Convert 22 inches into meters.
0.5588 meters
5. Convert the English Engineering units of mass, 10 pounds mass, into the official units of
mass for the SI system.
4.535 Kilograms
6. Convert 864 seconds to days.
0.01 days
Physics Practice
7. The relationships of equivalent units of measurements are called _____.
a.
conversion factors
b.
derived units
c.
fundamental units
d.
properties
8. The property defined as the force exerted on a surface divided by its area and has typical
units of (psi, Pa) is known as _____.
a.
density
b.
momentum
c.
kinetic energy
d.
pressure
9. Classify the following temperature scales as absolute temperature scales or relative
temperature scales.
-
Rankine - Absolute
-
Celsius - Relative
-
Fahrenheit - Relative
-
Kelvin - Absolute

10. Typical SI units associated with the symbol a are _____.
a.
m
s2
b.
cm
s
c.
m
s
d.
s2
m
Physics Practice
11. An object travels in a straight line. The object covers 10.5 meters in 0.5 minutes.
Calculate the speed of the object.
a.
0.47 m/min
b.
21 m/min
c.
5.25 m/min
d.
0.35 mi/s
12. A neutron (mass = 1.675 x 10-27 Kg) accelerates at a rate of 2.2x1010m/s/s. Calculate the
force acting on the neutron.
a.
7.614 x 1015 N
b.
3.685 x 10-28 N
c.
7.614 x 10-35 N
d.
3.685 x 10-17 N
13. The following is an expression of which law? “A body which is at rest (its speed is 0)
will continue to remain at rest provided that there are NO net forces acting upon it and a
body in motion in a straight line at constant speed will continue to move in a straight line
at constant speed provided that there are NO net forces acting upon it.”
a.
Newton’s First Law
b.
Newton’s Second Law
c.
Newton’s Third Law
d.
Newton’s Law of Universal Gravity
14. A 1,500 kg object accelerates from rest to 88m/sec in 6 seconds. Calculate the
acceleration acting on the object.
a.
0 m/s2
b.
14.7m/s2
c.
44 m/s2
d.
88 m/s2
Physics Practice
15. A 10 lbm object at rest begins to fall from a 100 foot tall roof top. It takes the object 2.5
seconds to fall. Calculate how fast the object is traveling when it hits the ground.
a.
24.5 ft/s
b.
40 ft/s
c.
80.5 ft/s
d.
0 ft/s
16. The measure of the motion of a moving body, the product of the body's mass and the
velocity at which it is moving, is called _______________.
a.
Speed
b.
Momentum
c.
Kinetic energy
d.
Conservation of energy
17. The velocity of an object is doubled. How is momentum affected?
a.
momentum is halved
b.
momentum is doubled
c.
momentum is not affected by force
d.
momentum remains constant
18. One of the most useful properties of momentum is that it is conserved. This means that if
no _______________ acts upon an object, the momentum of the object remains constant.
a.
external mass
b.
net external force
c.
force
d.
external momentum
19. The definition of work is when a force is applied to an object and the object
_____________________.
a.
moves through some distance
b.
slows down
c.
resists the force
d.
is attracted to the source of the force
Physics Practice
20. The capacity of a system to do work is the definition of ____________.
a.
heat
b.
power
c.
force
d.
energy
21. A 500 kg load is raised 10 m above the reference plane. Calculate its potential energy.
a.
49,050 J
b.
24,525 N
c.
24,525 ft lbf
d.
49,050 N
22. Energy cannot be created or destroyed, only altered in form." is a statement of which
physical law?
a.
Pascal’s Law
b.
Newton’s First Law
c.
The Law of Conservation of Energy
d.
The Law of Universal Gravitation
23. The rate of doing work, or work done per unit time is the definition for _________.
a.
power
b.
energy
c.
force
d.
momentum
24. Which of the following units are used to represent power?
a.
joules
b.
watts
c.
foot pound force
d.
newtons
Physics Practice
25. Calculate the distance an object moves if it starts at a velocity of 10ft/sec, and accelerates
at a rate of 15ft/s2 for 9seconds. (Use English units)
a.
90 ft
b.
540 ft
c.
607.5 ft
d.
697.5 ft