Phys Sci Ch 14 B Question Preview (ID: 19023)


2nd Half Of Ch 14. TEACHERS: click here for quick copy question ID numbers.

In which of the following is no work done?
a) none of the above
b) lifting a book
c) climbing stairs
d)

A 100 m long ski lift carries skiers from a station at the foot of a slope to a second station 40 m above. What is the IMA of the lift?
a) 2.5
b) 40
c) 100
d)

A machine is classified as a compound machine if it
a) has an IMA greater than 1
b) has moving parts
c) is made up of two or more simple machines that operate together
d)

The power of a machine measures
a) the force it produces
b) its strength
c) its rate of doing work
d)

The bottle opener is what type of a lever?
a) Class 1
b) class 2
c) class 3
d)

The mechanical efficiency of any machine is always _____ than 100%.
a) equal to
b) more than
c) less than
d)

The force that is exerted on a machine is called the __________ force.
a) input
b) output
c)
d)

2 or more simple machines working together to make up a(an) ______ machine
a) simple
b) compound
c) movable
d)

Besides a reduction in friction, the only way to increase the amount of work output of a machine is to _______ the work input
a) increase
b) decrease
c)
d)

A device that changes the size or direction of force used to do work is called a(an) _______
a) pulley
b) lever
c) machine
d)

Play Games with the Questions above at ReviewGameZone.com
To play games using the questions from above, visit ReviewGameZone.com and enter game ID number: 19023 in the upper right hand corner or click here.

TEACHERS / EDUCATORS
Log In | Sign Up / Register

Help / Support / FAQ




Gaming Links