University:
Kentucky State University
Course:
PHY 211 | General Physics I
Academic year:

2019
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418

Pages:

2
Author:

hekeldigzjbz

PHYSICS DEPARTMENT FALL SEMESTER Student's Name PHYSICS (FIRST EXAM) Registration# Useful Information: Some Results Are Rounded.. CONSIDER (ACCELERATION DUE TO GRAVITY) g=9.8 m/s List your final answers in this table using Capital Letters Only the answer in this table will be graded Question Q1: Q2: Q3: Q4: Q5: Q6: Q7: Q8: Q9: Q10: Final Answer EBACEBADDA Q1: A jet aircraft landing on an aircraft carrier is brought to a complete stop from a velocity of 215 km/h in 250 m. What is its average acceleration (in m/s)? 0- A) -92.59 B) -52.3 C)-32.6 0560), 2xx250 as-7.2. D) -9.6 E) -7.1 Q2: A car starts moving from rest at a constant acceleration until it reaches a speed of 60 m/s. The magnitude of the average velocity of the car (in m/s) during this period is: A A) 10 B) 30 C) 40 D) 50 E) 60 Q3: An object moved from rest on a straight line with a constant acceleration. After a certain time t, its speed was 4 m/s. It then moved 50 m with the same acceleration, if its speed was 6 m/s by the end of these 50 m, then the time t in seconds) is: A) 20.0 B) 29.1 C) 10.0 D) 35.2 E) 42.8 Q4: Two objects are dropped from a bridge, an interval of 1.00 s apart. What is the vertical distance separating them (in m) 1.00 s after the second object is released? (Neglect air resistance) A) 4.90 B) 9.80 C) 14.7 D) 19.8 E) 39.2 Q5: Each of the following diagrams represents a set of forces acting on an object. If the object moves with a constant velocity, which diagram best represents the forces acting on it? A B C D E A) E B) D C) A D) E E) B Q6: A cyclist travels 400 m northeast from a reference point. The cyclist then travels 200 m north. What are the magnitude (in m) and direction 6 (north of east) of the cyclist's total displacement? A) 476,0-53.50 B) 560, 0-59.6" C) 662, 055.6° D) 598,065,1° E) 623,0-69.1° Q7: A 2-kg object is held stationary on a wall by a horizontal force Fas shown. The static coefficient of friction between the object and the wall is 0.5. What is the minimum force required to hold the object from sliding down? A) 39.2 N B) 9.8 N C) 29.4 N D) 49 N E) 19.6 N F Q8: A student is sitting on the right hand side in a bus, facing the direction of travel. The bus turns left while the student remains in the same position on the seat. While turning, the student experiences A) A force to the left and a force to the right B) A resultant force backward C) A resultant force to the right D) A resultant force to the left E) Zero resultant force Q9: A horizontal, 50 N force acts on a 15-kg block on an inclined plane making an angle of 30° with the horizontal as shown in the figure. If the block slides down the plane at a constant speed, what is the coefficient of kinetic friction between the block and the surface? A) 0.48 D) 0.20 B) 0.58 E) 0.28 C) 0.24 50 N 30° Q10: The figure shows an object of mass m 2 kg placed on top of another object m3 kg which can move on a horizontal surface. A force (F) of 20.0 N acts on my to the right. If the coefficients of kinetic friction between the surfaces are 0.3, and the coefficient of static friction between m, and me is 0.5, what is the force acting on m A) 2.1 N B) 5.9 N C) 9.8 N D) 3.9 N E) 11.2 N m

General Physics First Exam Fall Semester

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