E1t6 PBL Regular Preap Physics 2016
.
- 1.
An object travels 5 m in the 1st second of travel, 5 additional m during the 2nd second of travel, and 5 more m during the 3rd second of travel. Its acceleration is, therefore,
- A.
0 m/s^2
- B.
5 m/s^2
- C.
10 m/s^2
- D.
More than 10 m/s^2
Correct Answer
A. 0 m/s^2 -
- 2.
An object travels 5 m in the 1st second of travel, 5 additional m during the 2nd second of travel, and 5 more m during the 3rd second of travel. Its acceleration is, therefore,
- A.
0 m/s^2
- B.
5 m/s^2
- C.
10 m/s^2
- D.
More than 10 m/s^2
Correct Answer
A. 0 m/s^2 -
- 3.
The speed of a car will decrease if the car’s
- A.
Initial velocity is positive and its acceleration is zero.
- B.
Initial velocity is positive and its acceleration is positive.
- C.
Initial velocity is positive and its acceleration is negative.
- D.
Initial velocity is negative and its acceleration is negative.
Correct Answer
C. Initial velocity is positive and its acceleration is negative. -
- 4.
Acceleration is defined as
- A.
Rate of displacement.
- B.
The rate of change of displacement.
- C.
The change in velocity.
- D.
The rate of change of velocity.
Correct Answer
D. The rate of change of velocity. -
- 5.
For a scooter with a negative acceleration, which of the following statements is always true?
- A.
The scooter is losing speed.
- B.
The final velocity of the scooter will be negative.
- C.
The initial velocity of the scooter will be greater than its final velocity.
- D.
The scooter will have a negative displacement.
Correct Answer
C. The initial velocity of the scooter will be greater than its final velocity. -
- 6.
Four people are riding the bicycles along different paths. Bicyclist 1 is traveling east at a constant speed of 10 mph. Bicyclist 2 is traveling north at a constant speed of 5 mph. Bicyclist 3 is traveling along a circular path at a constant speed of 7 mph. Bicyclist 4 is traveling along a radius of Bicyclist 3's circular path at a constant speed of 20 mph. Which of the bicyclists is accelerating along his/her path?
- A.
Bicyclist 3 because of his velocity is constant but not his speed
- B.
Bicyclist 3 because his direction is constant
- C.
Bicyclist 3 because his direction is changing
- D.
None of the bicyclists are accelerating
Correct Answer
C. Bicyclist 3 because his direction is changing -
- 7.
The speed of a car will increase if the car’s
- A.
Initial velocity is positive and its acceleration is zero.
- B.
Initial velocity is positive and its acceleration is positive.
- C.
Initial velocity is positive and its acceleration is negative.
- D.
Initial velocity is negative and its acceleration is zero.
Correct Answer
B. Initial velocity is positive and its acceleration is positive. -
- 8.
The speed of a car will increase if the car’s
- A.
Initial velocity is positive and its acceleration is zero.
- B.
Initial velocity is negative and its acceleration is negative.
- C.
Initial velocity is positive and its acceleration is negative.
- D.
Initial velocity is negative and its acceleration is zero.
Correct Answer
B. Initial velocity is negative and its acceleration is negative. -
- 9.
An object travels 5 m in the 1st second of travel, 10 additional m during the 2nd second of travel, and 15 more m during the 3rd second of travel. Its acceleration is, therefore,
- A.
0 m/s^2
- B.
1.7 m/s^2
- C.
9.99 m/s^2
- D.
More than 10 m/s^2
Correct Answer
B. 1.7 m/s^2 -
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Mar 22, 2022Quiz Edited by
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