KINEMATICS TESTA KEY

KINEMATICS TESTA KEY - NAME: SOLUTIONS SPH3U3/6 KINEMATICS...

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NAME: SOLUTIONS SPH3U3/6 KINEMATICS TEST A MULTIPLE CHOICE : Place your answer on the LEGAL SIZE paper. 1) ( 1K ) The length, width and height of a box is 20 . 8.12 0.013 cm cm m ×× respectively. The volume of the box with the correct number of significant figures is A) 0 3 .21112 cm B) 0 3 .21 cm C) 2.1 cm 3 D) 21.112 cm 3 E) 21 cm 3 * 2) ( 1K ) If a car is traveling at 36 km hr , what is its speed? Answers are given in m s . A) 5 B) 8 C) 10 * D) 100 E) None of the above 3) ( 1K ) A car traveling with an initial velocity v 0 comes to a stop in a time interval Δ t . If the deceleration during this time Δ t is constant, which of the following statements is CORRECT for that time interval? A) The displacement covered is () vt 0 2 Δ . * B) The average speed is v t 0 Δ . C) The acceleration is v 0 2 . D) The displacement covered was 0 2 2 Δ . E) The final velocity was v 0 . 4) ( 1K ) A ball is thrown upwards. After it has left the hand, its acceleration A) is zero. B) increases. C) decreases. D) remains constant. * E) is infinite. 5) ( 1K ) An object moves from one point in space to another. After it arrives at its final destination, its displacement is A) either greater than or equal to the distance traveled. B) always greater than the distance traveled C) always equal to the distance traveled. D) either smaller than or equal to the distance traveled. * E) never equal to the distance traveled. 6) ( 1K ) The graph below describes the position of a train. Which of the following statements is CORRECT regarding the motion of the train? A) The train is speeding up part of the time. B) The train is speeding up all the time. * C) The train is slowing down part of the time. D) The train is slowing down all the time. E) The train speeds up and then slows down. 7) ( 1K ) Which one of the following is always true about a car slowing down along a straight road? A) It has a negative acceleration. B) It has a negative velocity. C) It has a negative displacement D) The velocity vector and the acceleration vector are in opposite directions. * E) The velocity vector and the acceleration vector are in the same direction.
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Questions 8–9 refer to the position–time graph provided below.
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This note was uploaded on 07/27/2010 for the course MATH MATH 1025 taught by Professor Tanny during the Spring '09 term at York University.

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KINEMATICS TESTA KEY - NAME: SOLUTIONS SPH3U3/6 KINEMATICS...

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