SAN JOSE STATE UNIVERSITYPHYSICS DEPARTMENTPHYS 50-06 CLOSED BOOKSample MIDTERM 1SHOW ALL WORK IN SPACE PROVIDED Spring 20101. The Position of an object moving in a straight line is givenbyx = 8 - 5t + 4t2 + t3, 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 = 8.0I - 4.0j + 4.0k andb = 2.0I+ 6.0j + 3.0k . 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 ground at a speed of 20.0 m/s at an angle of 53.0 degrees above the
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San José State University, Physics Department PHYS, t= 1s