Geas

10 Questions

Settings
Please wait...
Geas

Priority Level: High (ECE)


Questions and Answers
  • 1. 
    An object which weighs 10 N is dropped from rest from a height of 4 meters above the ground. When it has free-fallen 1 meter its total mechanical energy with respect to the ground is ____.
    • A. 

      2.5 J

    • B. 

      10 J

    • C. 

      30 J

    • D. 

      40 J

  • 2. 
    • A. 

      A vector is a large quantity and a scalar is a small quantity

    • B. 

      A scalar quantity has a magnitude and a vector quantity does not

    • C. 

      A vector quantity is described with a direction and a scalar is not

    • D. 

      A scalar quantity depends only upon the initial and final values of the quantity; this is not the case for vector quantities

  • 3. 
    If car A passes car B, then car A must be ____.
    • A. 

      Accelerating

    • B. 

      Accelerating at a greater rate than car B

    • C. 

      Moving faster than car B and accelerating more than car B

    • D. 

      Moving faster than car B, but not necessarily accelerating

  • 4. 
    A truck driving along a highway road has a large quantity of momentum. If it moves at the same speed but has twice as much mass, its momentum is ________________.
    • A. 

      Zero

    • B. 

      Quadrupled

    • C. 

      Doubled

    • D. 

      Unchanged

  • 5. 
    Two objects, A and B, have the same size and shape. Object A is twice as massive as B. The objects are simultaneously dropped from a high window on a tall building. (Neglect the effect air resistance.) The objects will reach the ground at the same time but object A will have a greater ___. 
    • A. 

      Speed

    • B. 

      Acceleration

    • C. 

      Momentum

    • D. 

      None of the above quantities will be greater

  • 6. 
    • A. 

      2.32 s

    • B. 

      3.6 s

    • C. 

      0.45 s

    • D. 

      0.94 s

  • 7. 
    A 945-kg car traveling rightward at 22.6 m/s slams on the brakes and skids to a stop (with locked wheels). If the coefficient of friction between tires and road is 0.972, determine the distance required to stop.
    • A. 

      13.4 m

    • B. 

      26.8 m

    • C. 

      8.6 m

    • D. 

      17.2 m

  • 8. 
    An engineer is designing the runway for an airport. Of the planes that will use the airport, the lowest acceleration rate is likely to be 3 m/s2. The takeoff speed for this plane will be 65 m/s. Assuming this minimum acceleration, what is the minimum allowed length for the runway?
    • A. 

      704 m

    • B. 

      436.5 m

    • C. 

      032 m

    • D. 

      1607 m

  • 9. 
    A baseball is popped straight up into the air and has a hang-time of 6.25 s. Determine the height to which the ball rises before it reaches its peak.
    • A. 

      47.9 m

    • B. 

      123 m

    • C. 

      78.2 m

    • D. 

      93.7 m

  • 10. 
    In a physics experiment, two equal-mass carts roll towards each other on a level, low-friction track. One cart rolls rightward at 2 m/s and the other cart rolls leftward at 1 m/s. After the carts collide, they couple (attach together) and roll together with a speed of _____________. Ignore resistive forces.
    • A. 

      0.5 m/s

    • B. 

      0.33 m/s

    • C. 

      0.67 m/s

    • D. 

      1.0 m/s