Physics Unit 1 Quiz 5

10 Questions | Total Attempts: 121

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Physics Unit 1 Quiz 5


Questions and Answers
  • 1. 
    1. A bullet is fired at an angle of 45O. Neglecting air resistance, what is the direction of acceleration during the flight of the bullet?
    • A. 

      Upward

    • B. 

      Dependent on the initial velocity

    • C. 

      Downward

    • D. 

      At a 45 O angle

  • 2. 
    A golfer drives her golf ball from the tee down the fairway in a high arching shot. When the ball is at the highest point of its flight: 
    • A. 

      The velocity and acceleration are both zero

    • B. 

      The x-velocity is zero and the y-velocity is zero

    • C. 

      The x-velocity is non-zero and the y-velocity is zero

    • D. 

      The velocity is non-zero and the acceleration is zero

  • 3. 
    For a projectile, what is the acceleration in the x-direction? 
    • A. 

      Depends on initial velocity

    • B. 

      Depends on how long it is in the air

    • C. 

      0 m/s2

    • D. 

      Depends on y-acceleration

  • 4. 
    An object is launched at an angle. How does the final velocity compare to the initial velocity if it lands at the same horizontal level?
    • A. 

      Opposite

    • B. 

      Unable to determine

    • C. 

      Equal and opposite

    • D. 

      Equal

  • 5. 
    A volleyball player taps a volleyball well above the net. The ball’s speed is least
    • A. 

      Just after it is tapped by the player.

    • B. 

      At the highest point of its path.

    • C. 

      Just before it strikes the ground.

    • D. 

      When the horizontal and vertical components of its velocity are equal.

  • 6. 
    Which of the following is NOT true of a projectile launched from the ground at an angle?
    • A. 

      The horizontal velocity is constant

    • B. 

      The vertical acceleration is upward during the first half of the flight, and downward during the second half of the flight.

    • C. 

      The horizontal acceleration is zero.

    • D. 

      The vertical acceleration is 9.81 m/s2 down.

    • E. 

      The time of flight can be found by horizontal distance divided by horizontal velocity.

  • 7. 
    As the launch angle of a projectile is increased from an angle of 0° to an angle of 90°, the range of a projectile will:
    • A. 

      Increase then decrease

    • B. 

      Decrease then increase

    • C. 

      Remain unchanged

    • D. 

      Increase only

  • 8. 
    The narrowest straight on Earth is Seil Sound in Scotland, which lies between the mainland and the island of Seil. The straight is only about 6.0 m wide. Suppose an athlete waning to jump “over the sea” leaps at an angle of 35o with respect to the horizontal. How much time does the athlete spend in the air? 
    • A. 

      1.32 s

    • B. 

      0.84 s

    • C. 

      0.93 s

    • D. 

      1.77 s

  • 9. 
    The narrowest straight on Earth is Seil Sound in Scotland, which lies between the mainland and the island of Seil. The straight is only about 6.0 m wide. Suppose an athlete waning to jump “over the sea” leaps at an angle of 35o with respect to the horizontal. What is the maximum height reached by the athlete? 
    • A. 

      1.05 m

    • B. 

      0.18 m

    • C. 

      0.02 m

    • D. 

      0.35 m

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