Question 3 (10 Points)   A small can is hanging from the ceiling.  A rifle is aimed directly at the can, as illustrated in the diagram.  At the instant the gun is fired, the can is released.  Ignored wind resistance and show that the bullet will always strike the can, regardless of the initial speed of the bullet.  (Assume that the bullet strikes the can before the can reaches the ground)          

Question 4 (15 Points)   The drawing shows an exaggerated view of a rifle that has been “sighted in” for a 91.4 meter target.  If the muzzle speed of the bullet is vo = 427 m/s, what are the two possible angles between the horizontal and the barrel such that the bullet will hit the target?  (One is so large that it would never be used in target shooting)    

Question 1 (15 Points) The velocity function for an object in motion is v(t) = 3t2 – 6t – 4 Determine the position function for the object Determine the acceleration function for the object What is the displacement of the object from t=0 to t=4 seconds What is the acceleration of the object at 2 seconds? Determine the average velocity from 0-3 seconds. How fast is the object moving at 1.5 seconds?

The abbreviation of the unit of resistance is

Displacement divided by time gives

Which of the following statements regarding prialt is true?

Temperature is a relative measure of

An object of mass 2 kg has a speed of 8 m/s and moves a distance of 6 m. What is its kinetic energy in joules?

Newton’s law of universal gravitation is believed to be applicable

How much heat is necessary to change 10 g of ice at -20oC into water at 10oC?