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Mastering Physics: Chapter 3

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Bachelors Physics (Chapter 3) Quiz on Mastering Physics: Chapter 3, created by Jillian Caldwell on 13/02/2016.
Jillian Caldwell
Quiz by Jillian Caldwell, updated more than 1 year ago
Jillian Caldwell
Created by Jillian Caldwell about 8 years ago
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Resource summary

Question 1

Question
A speedometer normally measures __________.
Answer
  • velocity
  • distance traveled
  • average speed
  • instantaneous speed

Question 2

Question
The difference between speed and velocity involves ________.
Answer
  • acceleration
  • path length
  • direction
  • the magnitude of each

Question 3

Question
Galileo discovered that when air resistance can be neglected, all objects fall with the same _______.
Answer
  • acceleration
  • distance
  • speed
  • energy of motion

Question 4

Question
Each second, a ball rolling down an inclined plane picks up ___________.
Answer
  • increasing amounts of speed
  • acceleration, not speed
  • the same amount of speed
  • decreasing amounts of speed

Question 5

Question
When we're talking about how quickly "how fast" changes, we're talking about _______.
Answer
  • increases in falling distance
  • acceleration
  • the difference between speed and velocity
  • free-fall physics

Question 6

Question
In its first second of free fall, a dropped softball will fall a vertical distance of ________.
Answer
  • 20m
  • 15m
  • 5m
  • 10m

Question 7

Question
A ball freely falling at 20 m/s will in the next second have a speed of _________.
Answer
  • more than 30 m/s
  • 20 m/s
  • 10 m/s
  • 30 m/s

Question 8

Question
The vertical height attained by a basketball player who achieves a hang time of a full 1 s is...
Answer
  • about 1.2 m
  • about 0.8 m
  • more than 2.5 m
  • about 2.5 m
  • about 1 m

Question 9

Question
A pot falls from a ledge and hits the ground 45 m below. The speed with which it hits the ground is
Answer
  • about 60 m/s
  • about 120 m/s
  • about 30 m/s
  • more than 120 m/s

Question 10

Question
A ball is thrown upwards. Neglecting air resistance, what initial upward speed does the ball need to remain in the air for a total time of 10 seconds?
Answer
  • about 80 m/s
  • about 60 m/s
  • about 50 m/s
  • about 100 m/s
  • about 110 m/s

Question 11

Question
A car accelerates at 2 meters per second per second. Assuming the car starts from rest, how much time does it need to accelerate to a speed of 30 m/s?
Answer
  • 2 seconds
  • 15 seconds
  • 60 seconds
  • 30 seconds
  • none of these

Question 12

Question
If a projectile is fired straight up at a speed of 10 m/s, the total time to return to its starting position is about
Answer
  • 1 second
  • 10 seconds
  • 2 seconds
  • 20 seconds
  • not enough info to estimate

Question 13

Question
If a projectile is fired straight up at a speed of 10 m/s, the time it takes to reach the top of its path is about
Answer
  • 2 seconds
  • 1 second
  • 10 seconds
  • not enough information to estimate

Question 14

Question
In each second of fall, the distance a freely falling object will fall is
Answer
  • about 10 m
  • the same, but not 5 m or 10 m
  • about 5 m
  • increasing
  • none of these

Question 15

Question
It takes 6 seconds for a stone to fall to the bottom of a mine shaft. How deep is the shaft?
Answer
  • more than 200 m
  • about 60 m
  • about 120 m
  • about 180 m

Question 16

Question
Starting from rest, the distance a freely falling object will fall in 0.5 second is about
Answer
  • 0.5 m
  • 1 m
  • 1.25 m
  • 5 m
  • none of the above

Question 17

Question
A ball is thrown upwards and caught when it comes back down. In the presence of air resistance, the speed with which it is caught is always
Answer
  • more than the speed it had when thrown upwards
  • the same as the speed it had when thrown upwards
  • less than the speed it had when thrown upwards
  • impossible to determine

Question 18

Question
At one instant a heavy object in air is moving upward at 50 meters per second. One second later its speed is approximately
Answer
  • 55 m/s
  • 50 m/s
  • 60 m/s
  • 40 m/s

Question 19

Question
If a car accelerates from rest at 2 meters per second per second, its speed 3 seconds later will be about
Answer
  • 2 m/s
  • 3 m/s
  • 4 m/s
  • 6 m/s

Question 20

Question
A car accelerates at 2 meters/s/s. Assuming the car starts from rest, how far will it travel in 10 s?
Answer
  • 10 m
  • 100 m
  • 2 m
  • 40 m
  • 200 m

Question 21

Question
A car maintains a constant velocity of 100 km/hr for 10 seconds. During this interval its acceleration is
Answer
  • 1000 km/hr
  • 110 km/hr
  • 10 km/hr
  • zero

Question 22

Question
An object covers a distance of 8 meters in the first second of travel, another 8 meters during the next second, and 8 meters again during the third second. Its acceleration in meters per second per second is approximately
Answer
  • 0
  • 24
  • 5
  • 8
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