Q 1. Displacement is which of the following types of quantities?

A. vector
B. magnitude
C. Dimensional
D. scalar

Q2. A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is its acceleration?

A.  0.64 m/s2
B.  0.78 m/s2
C.  0.21 m/s2
D.  0.46 m/s2
E.  0.97 m/s2

Q3. Jeff throws a ball straight up. For which situation is the vertical velocity zero?

A. on the way up
B. on the way back down
C. both a and c are correct
D. at the top
E. none of the above

Q4. A railroad train travels forward along a straight track at 80.0 m/s for 1 000 m and then travels at 50.0 m/s for the next 1 000 m. What is the average velocity?

A. 65.0 m/s
B. 70.0 m/s
C. 68.3 m/s
D. 61.5 m/s
E. 63.7 m/s

Q5. A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is the average velocity?

A. 3.4 m/s
B. 1.7 m/s
C. 2.5 m/s
E. 4.2 m/s
4. Zero