Question

Q1. What is 34.1 (3.00) (1.2465) written with the correct number of significant figures? D)37.83 A) 37.8395 B)38 C)37.8 E)40 Q2.Suppose that an object travels from one point to another. Choose the correct answer about the displacement and the distance traveled by this object. A) The displacement is either greater than or equal to the distance traveled B) The displacement is always equal to the distance traveled C) Distance is a vector and displacement is a scalar D) The displacement can be either greater than, E) The displacement is a vector and it is either less than or equal to the distance traveled smaller than, or equal to the distance traveled. Q3. Consider the graph the position versus time graph shown. Which curve on the graph best represents a constantly accelerating car? A) A E) None of the curves representa constantly accelerating car 04. IfR -Bč and their magnitudes are given by A B C, then the vectors A and B are oriented A) parallel to each other (in the same direction) B) perpendicular to each other. C) antiparallel to each other (in opposite directions) D) Angle between this two vectors is 450 E) It is impossible to know from the given information. o5, A truck has four times the mass of a car and is moving with half the speed of the car. If Kt and to the kinetic energies of truck and car respectively, it is correct to say that blocks are push across a frictionless surface. If the force P-6.0N, what is the magnitude of the 0 e that the 5.0 kg block exerts on the 3.0 kg block? A) 8.4 N B) 7.2 N C) 3.0 N D) 5.0 N E) 4.8 N 5.0 kg P2.0 kg 3.0 kg

Answer 1

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34.1 + 3.00 times 1.2465 = 34.1 + 3.7395 = 34.1 + 3.74 (as least significant figure after decimal is 2). = 34.1 + 3.74 = 37.84 = 37.8 (as least significant figure after decimal is 1). OPTION C