in spain but the s is silent

1. Which parameter is defined as “the change in position”?

• 1. Angular Velocity

• 0. Velocity

• 0. Displacement

• 0. Acceleration

1. The magnitude of acceleration would be smallest for which of the following situations?

• 1. vi = 4 m/s

  vf = 5 m/s

  Dt=2 s

• 1. vi = 4 m/s

  2. vf = 8m/s

  Dt=1 s

• 1. vi = 40 m/s

  vf = 43m/s

  Dt=3

• 1. vi = 4 m/s

  vf = 6 m/s

  Dt=3 s

The slope of a horizontal position vs. time plot is equivalent to which kinematic parameter?

• 1. Displacement

• 1. Velocity

• 1. Speed

• 1. Acceleration

4. The direction of angular displacement can be determined by

• 1. Left hand thumb rule

• 1. Size principle

• 1. Hill's model

• 1. Right hand thumb rule

4. If an object has a horizontal velocity (vi) of 20 m/s and horizontal acceleration (a) is zero, what would be the horizontal velocity (vf) after 5 seconds (t)?

• 1. 5 m/s

• 1. 20 m/s

• 1. 80 m/s

• 1. 100 m/s

4. During the projectile motion, the horizontal velocity will (assume no air resistance)

• 1. first increase, then decrease

• 1. first decrease, then increase

• 1. remain constant

• 1. depend on the situation

4. If angular acceleration is negative, which of the following statements could be true?

• 1. Angular velocity is positive and decreasing

• 1. Angular velocity is negative and decreasing.

• 1. Angular velocity is constant

• 1. Angular velocity is positive and increasing

4. During a softball pitch, the pitcher's arm goes through 120 degrees of angular displacement over 0.8 s. What is the average angular velocity?

• 1. 150 degrees/second

• 1. 300 degrees/second

• 1. 120 m/s

• 1. 360 degrees/second

4. During a knee extension exercise, if angular velocity was 10 deg/s, how long would it take to complete 50 degrees of angular displacement?
   

• 1. 8 s

• 1. 9 s

• 1. 5 s

• 1. 4 s

4. During the latter portion of the swing phase of a walking stride, the knee is extended from 5 degrees to 35 degrees over a time period of 0.2 seconds. What is the angular velocity?

• 1. -500 deg/s

• 1. 541 deg/s

• 1. 583 deg/s

• 1. 150 deg/s