Do on your own: 

	14.3 all core problems
	14.4 all core problems


Hand in: 

	14.3 #32-33.

	14.3 #51a [Hint: why is this easier after you've done section 14.4?]
	
	A train is traveling with instantaneous direction South
	on a section of track whose radius of curvature is 1/4 mile.
	Seeing a cow, the driver slams on the brakes.  The acceleration 
	of the train at this moment is 10 MPH / sec in the Northwest 
	direction.  How fast was the train going when the cow was 
	spotted?