Knowledge Check - Changes in Speed
Quiz
•
Physics
•
10th Grade
•
Practice Problem
•
Medium
Lynden Chester
Used 2+ times
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12 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If velocity is constant, acceleration is positive.
TRUE
FALSE
Answer explanation
When velocity is constant there is no acceleration.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A falling object is accelerating.
TRUE
FALSE
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Acceleration has magnitude as well as direction.
TRUE
FALSE
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The SI unit of acceleration is m/s2.
TRUE
FALSE
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A falling object has increasing acceleration.
TRUE
FALSE
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A car accelerates from 20 m/s to 80 m/s in 5 seconds. What is the average acceleration of the car?
20 m/s2
4 m/s2
16 m/s2
12 m/s2
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
A bus approaches red traffic light, and slows down from a speed of 18 m/s to rest in 3 seconds. What is the average acceleration?
6 m/s2
-6 m/s2
15 m/s2
-9 m/s2
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