SEMESTER EXAM GUIDE FOR PHYSICS II
NOTE: Remember that answered phone is required to file test. On Monday 18 will review progress with their guide and clarify doubts
THEORY (understanding and interpreting these concepts)
kinematics, dynamics, movement, trajectory, distance, displacement, velocity, speed, average speed, acceleration , force, Newton's laws, free body diagram, action line, mass, weight, uniform circular motion, angular displacement, radian, revolution, grade, angular velocity, period, frequency, work, energy, kinetic energy, potential energy , power.
II. SOLVE THE FOLLOWING PROBLEMS
1. Determine displacement in meters from a car going at a speed of 80 km / h to the east, for 0.5 min
2. Calculate the time in seconds it takes a train to travel straight 3 km to the south with a speed of 70 km / h.
3. The speedometer of a car registered a reading of 22 687 km at the beginning of a journey and 22 791 km at the end. The trip takes 4 hours. What was the average speed of travel?
4. A broker gives complete 1.5 revolutions around a circular track in a time of 50 s. The diameter of the track is 40 m and the circumference (perimeter) is 126 m. Encuéntrense (a) the average speed of the corridor and (b) the magnitude of the average velocity of the corridor.
5. A plane starts from rest and reaches a speed of 95 km / h in 7s for takeoff. What is its acceleration?
6. A car has an initial speed of 20 km / h north and 4s speed is 50 km / h. Calculate its movement in that time
7 A motorcyclist who goes to the South has a velocity of 10 km / h, then accelerates uniformly 3 m/s2 for 5 s, calculate the velocity obtained at the end of 5 seconds.
8. A car traveling at 60 km / h strikes a tree. Its front end is compressed and the driver comes to rest after traveling 0.70 m. What was the average deceleration of the driver during the collision?
9. It dropping an object from the mouth of the well bottom and takes four seconds to calculate the depth of the well
10. A stone is thrown downward from a height of 30 meters with a speed of 4 m / s. Calculate the time it hit the ground
11. A projectile is launched vertically upward with a speed of 25m / s, calculate the time it takes to increase
12. What initial velocity must shoot an arrow straight up to a depth of 110 m in 5.4 s?
13. A ball is thrown straight upward and returns to the ground in a time of 16 seconds, calculate the maximum height the ball.
14. A diver runs at 1.8 m / s is thrown horizontally from the edge of a ravine, and into the water 2.0 s later. How high was the cliff?
15. A tiger leaps horizontally from a rock 15 m high with a speed of 4.0 m / s. How far from the base of the rock will reach the ground?
16. A ball is thrown from a window at a speed of 10 m / s What are the components of the velocity of the ball after 2 seconds?
17. A stone is thrown horizontally with a speed of 20 m / s from a height of 70 m. Calculate the time it takes to reach the ground
18. A ball with a horizontal speed of 15 m / s wheel of a bench with a height of 1.5 m. What is its impact velocity?
19. It fires a mortar shell with an elevation angle of 30 degrees and an initial velocity of 40 m / s on level ground. Calculate the components of its velocity after 2.3 seconds
20 .. A cannon fires a projectile with an elevation angle of 50 and an initial velocity of 400 m / s on level ground. Identify the components of its position after 1.7 seconds
21. A golf ball is hit and get an initial speed of 40.0 m / s at an angle of 40 ° to the horizontal. Determine the maximum height
22. A long jumper leaves the ground at an angle of 30 degrees and travels 8.90 m. What was the takeoff speed?
23. It throws a stone at a speed of 40 m / s at an angle of 26 to the horizontal. Calculate your total flight time
24. Draw a free body diagram (forces of action and reaction) corresponding to the figure below (the same task three)
25. Find the tension of the strings A and B for the settlement of the figure below
(the same task three)
26. Calculate the weight of a body whose mass is a) 2 kg b) 2500 gc) 3 utm d) 20 slug
27. Calculate the mass of a body whose weight is a) 150000 dynes b) 800 N c) 10 pounds d) 45 kiloponds
28. A body of 110 N is raised by a lightweight cable. Cua1 " is the tension in the cable when the acceleration is equal to (a) zero, (b) 2 m/s2 upwards and (c) 5 m/s2 down?
29. A load of 50 kg cement is lifted by a cable to an acceleration of 1.8m/s2. What is the string tension?
30. A load of 8 kg hanging on the end of a rope. Find the acceleration of the load if the tension in the cord is 85N
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