quiz1Aa1

quiz1Aa1 - Physics 1A-a 8AM CLASS Quiz # 1 Oct. 10, 2008...

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Physics 1A-a 8AM CLASS Quiz # 1 Oct. 10, 2008 Prof. Jose Onuchic MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) A brick is thrown straight down with an initial velocity of 20 m/s from a cliff. What is the magnitude of the brick's displacement after 3.0 s? (Acceleration due to gravity is 9.80 m/s 2 .) A) 88 m B) 104 m C) 44 m D) 60 m E) 29.4 m 2) A right triangle has sides 10 m, 24 m, and 26 m. The smallest angle of this triangle is nearest: A) 20 o B) 15 o C) 23 o D) 30 o E) 43 o 3) A v vs. t graph is drawn for a ball moving in one direction. The graph starts at the origin and at t = 5 s the acceleration of the ball is zero. We know that at t = 5 s, A) the curve is not crossing the time axis B) the slope of the curve is nonzero C) the curve is at v=0, t=0 D) the velocity of the ball is not changing 4) A man, accelerating from rest at a constant rate, experiences a displacement of 56 m in 11 s. What is its acceleration? A) 0.42 m/s
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quiz1Aa1 - Physics 1A-a 8AM CLASS Quiz # 1 Oct. 10, 2008...

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