Score for this quiz: 56 out of 75
Submitted Jan 17 at 7:48pm
This attempt took 59 minutes.
Question 1
2 / 2 pts
A body at the end of a spring oscillates up and down ten times in five seconds. The period of
oscillation is
0.5 s.
2 s.
5 s.
10 s.
not determinable.
IncorrectQuestion 2
0 / 2 pts
The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III.
The object’s acceleration is negative in region(s)
I.
II.
III.
no regions
Question 3
2 / 2 pts
Fifteen microseconds is
0.0000015 s.
0.000015 s.
0.00015 s.
0.015 s.
15000000 s.
Question 4
2 / 2 pts
A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of
gravity is 9.8 m/s2. The ball is referred to at the two-second time.
The distance the ball is below the rooftop in meters is
0.
4.9.
9.8.
19.6.
none of these.
IncorrectQuestion 5
0 / 2 pts
The acceleration of a ball as it rolls down a ramp is 4 m/s2. The ball is referred to 2 s after it
starts to roll.
The distance from the starting point in meters is
0.
2.
4.
8.
16.
Question 6
2 / 2 pts
The maximum possible speed in nature is
warp 10.
the speed of light.
infinite.
unknown.
IncorrectQuestion 7
0 / 2 pts
A ball thrown upwards reaches a maximum height and then comes back down to the original
level.
As the ball is going upwards
the velocity and acceleration both point up.
the velocity points up and the acceleration down.
the velocity points down and the acceleration up.
the velocity and acceleration both point down.
the acceleration is zero.
Question 8
2 / 2 pts
An object moving in a circle undergoes
constant acceleration.
free fall.
centripetal acceleration.
linear acceleration.
frequency.
Question 9
2 / 2 pts
The time for one complete cycle of a periodic process to take place is called
amplitude.
frequency.
period.
wavelength.
speed.
Question 10
2 / 2 pts
Twenty kilometers is
200,000 m.
20,000 m.
2,000 m.
200 m.
0.02 m.
IncorrectQuestion 11
0 / 2 pts
The sum of vectors A and B is
Question 12
2 / 2 pts
What is the period of a signal that has a frequency of 60 Hz?
60 s
60 s¯1
1/60 s
not determinable
IncorrectQuestion 13
0 / 2 pts
A ball is dropped from a rooftop of a building and falls for two seconds. The acceleration of
gravity is 9.8 m/s2. The ball is referred to at the two-second time.
The acceleration of the ball in m/s2 is
0.
4.9.
9.8.
19.6.
none of these.
Question 14
2 / 2 pts
How many megabytes are there in a gigabyte?
10
1000
1000000
none of the above
Question 15
2 / 2 pts
A ball thrown upwards reaches a maximum height and then comes back down to the original
level.
As the ball is going downwards
the velocity and acceleration both point up.
the velocity points up and the acceleration down.
the velocity points down and the acceleration up.
the velocity and acceleration both point down.
the acceleration is zero.
Question 16
3 / 3 pts
The proper abbreviation for ‘kilohertz’ is ‘kHz.’
True
False
Question 17
3 / 3 pts
The acceleration of a ball as it rolls down a ramp is 4 m/s2. The ball is referred to 2 s after it
starts to roll.
The distance from the starting point is 16 m.
True
False
Question 18
3 / 3 pts
Motion in a circle at constant speed is motion with constant velocity.
True
False
IncorrectQuestion 19
0 / 3 pts
An aircraft approaches a runway that runs directly east as a strong wind blows out of the south.
The direction that the aircraft should aim in order to land is east of north.
True
False
IncorrectQuestion 20
0 / 3 pts
The acceleration of a ball as it rolls down a ramp is 4 m/s2. The ball is referred to 2 s after it
starts to roll.
The acceleration after starting from rest is 8 m/s2.
True
False
Question 21
3 / 3 pts
If an object’s acceleration is positive, its speed must be increasing.
True
False
Rationale:
It could have a negative velocity that is getting less negative, which corresponds to a decreasing
speed.
Question 22
3 / 3 pts
The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III.
The object’s velocity is never negative.
True
False
Question 23
3 / 3 pts
The second is a metric unit of measure.
True
False
Question 24
3 / 3 pts
When a body moves in circular motion at constant speed the velocity and acceleration point in
opposite directions.
True
False
IncorrectQuestion 25
0 / 3 pts
The figure shows a distance vs. time graph of an object with three distinct regions, I, II, and III.
The object’s acceleration is negative in region III.
True
False
Question 26
15 / 15 pts
Select the closest matching pairs possible. 3 pts for each response.
Velocity
Vector quantity including displacement per time with direction.
Acceleration
Change of velocity with time
Speed
Scalar quantity including displacement per time.
Centripetal Acceleration
Acceleration of an object moving in a circular path
Circular Motion
Velocity would have acontinuously changing direction
Quiz Score: 56 out of 75
