Physics 011
Chapter 1
Quiz#:1
MC#2A 

1. 

Kinetic energy
is given by the formula KE = 1/2 mv^{2}, where m is the
mass and v is the velocity. The derived SI unit of energy is
the joule, J, which is equivalent to which combination of basic units? 




2. 

If 1 inch
is equal to 2.5 cm, approximately how many inches are in 1000 kilometers? See Section 16 




3. 

A marathon
race is about 26 miles long. What is the length in kilometers? (1 km = 0.623
mi.) See Section 16 




4. 

If a man
is 6 foot 4 inches tall, what is his approximate height in centimeters? (1
in. = 2.54 cm) See Section 16 




5. 

The
terminal velocity of a drop of water falling through the atmosphere is v =
(2/9) (r^{2} g p/n) where v is the velocity of the drop in
m/s; r is the radius of the drop in m; g is the
acceleration of gravity in m/s^{2} and p is the density of
water in kg/m^{3}. What must be the units of n, the
coefficient of viscosity of the air through which the drop falls? See Appendix B 
