SAN JOSE STATE UNIVERSITY PHYSICS DEPARTMENT PHYS 50-06 CLOSED BOOK Sample MIDTERM 1 SHOW ALL WORK IN SPACE PROVIDED Spring 2010 1. The Position of an object moving in a straight line is given by x = 8 - 5t + 4t 2 + t 3 , where x is in meters and t is in seconds. Determine: a) The average velocity between t= 1s and t= 3s. b) The instantaneous velocity at t= 1s and t= 3s. c) The instantaneous acceleration at t= 1s and t= 3s. d) The average acceleration between t = 1s and t= 3s. (20 pts) 2. Given the two vectors a = 8.0 I - 4.0 j + 4.0 k and b = 2.0 I + 6.0 j + 3.0 k . Determine: a) The scalar product a ⋅ b b) The angle between a and b (10 pts) 3. A placekicker kicks a football from a point 30.0 m from the goal and the ball must clear the crossbar that is 3.00 m high. The ball leaves the
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This note was uploaded on 09/08/2010 for the course PHYS 50 at San Jose State University .