PH 2004 Fall Tests

# PH 2004 Fall Tests - PHYSICS HONORS CHAPTER 2 TEST:...

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PHYSICS HONORS VERSION 1 CHAPTER 2 TEST: ONE-DIMENSIONAL KINEMATICS Questions 1-8 are worth 10 points each. Question 9 is worth 20 points. Write answers using three significant figures. Use scientific notation for answers larger than 100 and less than 0.100. Include magnitude and direction for all vectors. avg t = x v avg t = v a [ ] 2 9.81 g m s down = fo v v at =+ ( ) 1 2 x v vt 2 1 2 o x v t at 2 1 2 f x v t at =− 22 2 v v ax A car changes velocity from an initial value of 14.0 m/s to the right to a final value of 5.00 m/s to the left. The change in velocity takes 4.00 s to complete. 1) What is the acceleration of the car during this time? A boy standing at the edge of a cliff throws a rock straight up into the air. The rock has an initial speed of 10.0 m/s. Some time later, the rock is a vertical distance of 15.0 m below its starting point. 2) What is the velocity of the rock at that instant? 3) What was the maximum altitude of the rock, relative to its starting point? A track star has just completed her race, and is traveling at 7.50 m/s to the right. She uniformly accelerates to a stop as she runs an additional 25.0 m to the right. 4) How long did it take her to stop? An airplane begins to accelerate at 5.00 m/s 2 to the north. After one minute of acceleration, the airplane has moved 16.0 km northward in a straight line. 5) What was the velocity of the airplane when it began to accelerate? The driver of a car sees a dog run into the street ahead of him, and he hits the brakes. The car skids to a stop over a distance of 1.10 x 10 2 m as the brakes accelerate the car at 9.50 m/s 2 . 6) How long does it take the car to skid to a stop? The graph at right depicts the northward velocity of a skateboard as a function of time. 7) What is the acceleration of the skateboard? 8) What is the displacement of the skateboard during the time interval shown on the graph? You are looking out of 2.50 m tall window when you see a rock fall downward. You saw that it took the rock 0.150 s to move from the top of the window to the bottom. You find out later that it was dropped from the roof. 9) From how far above the top of the window was the rock released? 7 m/s -3 m/s 6 s v (m/s) t (s)

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PHYSICS HONORS CH. 3 TEST: TWO-DIMENSIONAL KINEMATICS version 1 Show your work. Use scientific notation for answers larger than 100 and less than 0.10. Include magnitude and direction for all vectors. Write answers using three significant figures. x v t = v a t = 13 12 23 vvv =+  2 9.80 [ ] g ms = D xy AA A  fo v v at 2 1 2 o s v t at 1 2 2 f s v t at =− ( ) 1 2 s v vt ax v v o f 2 2 2 + = A guided missile is initially moving at 500 m/s [W] when it begins to accelerate at 20.0 m/s 2 [S]. 1) What is the displacement of the missile after 20 seconds? A gun is set up at the top of a tower that is 500 m high. The gun fires a projectile with an initial velocity of 150 m/s [N35ºU].
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## This note was uploaded on 08/29/2010 for the course PHYS 38234 taught by Professor Ramesh during the Spring '09 term at Berkeley.

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PH 2004 Fall Tests - PHYSICS HONORS CHAPTER 2 TEST:...

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