Department of Natural Sciences

Clayton College & State University

 

August 27, 2004

Physics 2211 – Quiz 1

 

 

Name  ____SOLUTION_________________________________

 

  1. If the displacement of the object, x, is related to velocity, v, according to the relation x = A v, the constant, A, has the dimension of which of the following?

 

    1. Acceleration.

                                                                                               A =  x / v,    

    1. Length.

                                                                                               [A] = [ x] /[ v] = L / (L/T) = T    

    1. Time.

 

    1. Area.

 

  1. On planet Q the standard unit of volume is called guppi. Space travelers from Earth have determined that one liter = 38.2 guppies. How many guppies are in 150 liters?

 

    1. 5730 guppies.           (150 liters) x ( 38.2 guppies/1 liter) = 5730 guppies

 

    1. 0.255 guppies.

 

    1. 3.93 guppies.

 

    1. 188 guppies.

 

  1. The speed of a boat is often given in knots. If a speed of 5 knots were expressed     in the SI system of units, the units would be:

 

    1. m.

 

    1. s.

 

    1. m/s.

 

    1. kg/s.