State the work-energy theorem
What will be an ideal response?
The total work done on (or by) an object is equal to the change in its kinetic energy.
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Which of the following products of ratios gives the conversion factor to convert miles per hour 
to meters per second 
?
A.
B.
C.
D.
E.
Length Contraction: The figure shows a right-angled construction frame ABC. When measured at rest, it has dimensions as follows: AB = 18.9 m, AC = 10.0 m, and BC = 16.0 m. This frame is now given a new velocity of 0.420c, relative to Earth, in a direction parallel to AC. How long is part BC of this frame with the new velocity as measured by Earth-based engineers?
A. 16.0 m B. 14.0 m C. 12.0 m D. 10.0 m E. 18.0 m
A car travels along east and its velocity decreases. The acceleration of the car is in which of the following directions?
A) Eastward B) Westward C) Northward D) Southward E) Cannot be determined without additional information.
The half-life of a muon is 2.2 ?s. How fast is it moving relative to an observer who says its half-life is 4.4 ?s?
a. 0.87 c b. 0.75 c c. 0.97 c d. 0.72 c e. 0.50 c