Find out the displacement, velocity and acceleration


Find displacement, velocity and acceleration.

1. Displacement is which of the following types of quantities?
a. vector
b. scalar
c. magnitude
d. Dimensional

2. A bird, accelerating from rest at a constant rate, experiences the displacement of 28 m in 11 s. What is an average velocity?
a. 1.7 m/s
b. 2.5 m/s
c. 3.4 m/s
d. 4.2 m/s
e. Zero

3. Jeff throws a ball straight up. For which situation is the vertical velocity zero?
a. on the way up
b. at the top
c. on the way back down
d. both a and c are correct
e. none of the above

4. A railroad train travels forward along a straight track at 80 m/s for 1.000 m and then travels at 50.0 m/s for the next 1.000 m. What is an average velocity?
a. 65.0 m/s
b. 61.5 m/s
c. 63.7 m/s
d. 70.0 m/s
e. 68.3 m/s

5. A bird, accelerating from rest at a constant rate, experiences a displacement of 28 m in 11 s. What is its acceleration?
a. 0.21 m/s2
b. 0.46 m/s2
c. 0.64 m/s2
d. 0.78 m/s2
e. 0.97 m/s2


6. A European sports car dealer claims that his product will accelerate at a constant rate from rest to a speed of 100 km/hr in 8s. What distance will the sports car travel during the 8 s acceleration period? (Hint: First convert speed to m/s.)
a. 55.5 m
b. 77.7 m
c. 111 m
d. 222 m
e. 268 m

7. A rock is thrown straight up with an initial velocity of 19.60 m/s. What time interval elapses between the rocks's being thrown and its return to an original launch point? (Acceleration due to gravity is 9.80 m/s2.)
a. 4.00 s
b. 5.00 s
c. 8.00 s
d. 10.0 s
e. 15.0 s

8. A baseball is released at rest from the top of Washington Monument. It hits the ground after falling for 6s. What was the height from which the ball was dropped? (g = 9.8 m/s2 and assume air resistance is negligible)
a. 1.5 102 m
b. 1.8 102 m
c. 1.1 102 m
d. 2.1 102 m
e. 2.5 102 m

9. A ball is thrown vertically upwards at 19.60 m/s. For its complete trip (up and back down to the starting position), its average speed is:
a. 19.6 m/s.
b. 9.80 m/s.
c. 4.90 m/s.
d. 3.15 m/s.
e. Not given.

10. A jogger runs halfway around a circular path with a radius of 60 m. What, respectively, are the magnitude of the displacement and the distance jogged?
a. 60 m, 188 m
b. 120 m, 188 m
c. 0 m, 377 m
d. 120 m, 377 m
e. 60 m, 377 m

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Physics: Find out the displacement, velocity and acceleration
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