Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Virtual work wikipedia , lookup
Newton's theorem of revolving orbits wikipedia , lookup
Jerk (physics) wikipedia , lookup
Fictitious force wikipedia , lookup
Centrifugal force wikipedia , lookup
Rigid body dynamics wikipedia , lookup
Equations of motion wikipedia , lookup
Work (physics) wikipedia , lookup
Classical central-force problem wikipedia , lookup
PYP001-MAJOR-I Solution Right Answers are highlighted in Yellow [They are all choice A] Q1. Weight is A) B) C) D) E) A force Same as mass Acceleration due to gravity Inertia Not a vector Q2. Two forces F1 and F2 are acting on an object. If the magnitude of F1 + F2 has a maximum value of 9 N and a minimum value of 1 N, then the magnitudes of the two forces would be: A) B) C) D) E) 4 N and 5 N 2 N and 7 N 8 N and 1 N 3 N and 6 N 10 N and 1 N Sec# Patterns of Motion and Equilibrium - Net Force Grade# 50 Q3. An object hanging from a rope is in mechanical equilibrium. Which of the following statements is TRUE? A) B) C) D) E) The weight of the object is equal to the tension in the rope The object moves upward with constant acceleration The object has an acceleration of 10 m/s2 downward The tension in the rope is greater than the weight of the object The weight of the object is greater than the tension in the rope Sec# Patterns of Motion and Equilibrium - The Equilibrium Rule Grade# 60 Q4. A car is traveling east at a constant speed of 100 km/h in a straight line. The driving force from the car’s engine is 1000 N. The net force on the car is A) 0 N B) 1000 N east C) 100 N east D) 100 N west E) 1000 N west Sec# Patterns of Motion and Equilibrium - Net Force Grade# 50 Q5. An object is dropped from a tall building. Just before hitting the ground, its inertia will A) B) C) D) E) Be the same Decrease Increase Increase then decrease Increase by a small amount Sec# Patterns of Motion and Equilibrium - Mass-A Measure of Inertia Grade# 60 Q6. In which of the following cases the net force is not equal to zero? An object A) B) C) D) E) Moving with constant speed in a circle At rest In static equilibrium In dynamic equilibrium Moving in a straight line with constant speed Sec# Patterns of Motion and Equilibrium - Equilibrium of Moving Things Grade# 70 Q7. Object A has twice as much mass as object B. This means object A has twice as much A) B) C) D) E) Inertia Velocity Speed Gravitational acceleration Volume Sec# Patterns of Motion and Equilibrium - Mass-A Measure of Inertia Grade# 70 Q8. According to Galileo, if we neglect air resistance, a ball fired from a cannon will continue to move away from the cannon because of A) B) C) D) E) Its inertia The large surface of the Earth The wind The gravitational force of the Moon Its small volume Sec# Patterns of Motion and Equilibrium - Mass-A Measure of Inertia Grade# 50 Q9. The friction force on an object is always A) B) C) D) E) Opposite to the direction of motion of the object Equal to the applied force on the object Opposite to the force of gravity Equal to the weight of the object Equal to the normal force Sec# Patterns of Motion and Equilibrium - The Force of Friction Grade# 70 Q10. A 60-kg person stands on two identical bathroom scales with his weight evenly distributed between the two scales. Each scale should read A) B) C) D) E) None of these 600 N 1200 N Zero N 200 N Sec# Patterns of Motion and Equilibrium - The Support Force Grade# 60 Q11. A block of mass m moves with constant velocity on a rough inclined plane. Which of the following best describes the forces acting on the block? A) B) C) D) E) The sum of the friction force, the normal force and the weight is equal to zero The friction force is equal to the normal force The friction force is equal and opposite to the weight The normal force is equal and opposite to the weight The sum of the friction force, the normal force and the weight is greater than zero Sec# Patterns of Motion and Equilibrium - The Support Force Grade# 50 Q12. A football player starts from rest, 30 meters from the goal line, and accelerates away from the goal line at 1 m/s2. How far from the goal line is the player after 4 s? A) B) C) D) E) 38 m 34 m 46 m 8m 26 m Sec# Patterns of Motion and Equilibrium - Acceleration Grade# 50 Q13. An object is thrown vertically upward with an initial speed of 40 m/s. What is the distance traveled by the object between the times t = 1 s and t = 2 s? A) B) C) D) E) 25 m 20 m 40 m 60 m 35 m Sec# Patterns of Motion and Equilibrium - Acceleration Grade# 30 Q14. If a car starts from rest and speeds up from Khobar to Riyadh, 400 km away, with a constant acceleration equal to the acceleration due to gravity g, how long does it take the car to reach Riyadh? A) B) C) D) E) 4.7 minutes 4.7 seconds 4.7 hours 13.3 minutes 3.3 minutes Sec# Patterns of Motion and Equilibrium - Acceleration Grade# 40 Q15. Consider two cars, A and B. Car A is moving west with a speed of 100 km/h. Car B is moving east with a speed of 150 km/h. The velocity of car B relative to car A is A) 250 km/h east B) C) D) E) 250 km/h west 150 km/h east 50 km/h east 50 km/h west Sec# Patterns of Motion and Equilibrium - Speed and Velocity Grade# 60 Q16. Which of the following objects is in free fall (ignore air resistance)? A) B) C) D) E) All mentioned objects are in free fall A stone thrown downward A bullet fired from a gun A stone dropped from a building A stone thrown upward Sec# Patterns of Motion and Equilibrium - Acceleration Grade# 40 Q17. At one instant, a car is moving at 10 m/s north. One second later it is moving at 10 m/s south. What is its acceleration during this one second interval? A) B) C) D) E) 20 m/s2 south 0 m/s2 20 m/s2 north 10 m/s2 south 10 m/s2 north Sec# Patterns of Motion and Equilibrium - Acceleration Grade# 50 Q18. A car moves along a circular race track with a constant speed of 50 km/h. What is its average speed during one full circle? A) B) C) D) E) 50 km/h 0 km/h 25 km/h 100 km/h 500 km/h Sec# Patterns of Motion and Equilibrium - Speed and Velocity Grade# 60 Q19. A 2-kg book is at rest on a rough horizontal table. How much friction is acting on the book? A) B) C) D) E) 0N 20 N 10 N 2N 1N Sec# Patterns of Motion and Equilibrium - The Force of Friction Grade# 70 Q20. Nellie hangs at rest from the ends of the rope as shown in Figure 1. Her mass is 50 kg. What is the reading on the scale? Fig# Figure 1 A) 25 kg B) 50 kg C) 75 kg D) 100 kg E) 0 kg