What is the difference between a vector and a scalar?
a
A vector measurement contains a direction and magnitude, a scalar measurement only contains a magnitude
b
A vector is only measured in SI units, where scalars are only measured in US Customary units
c
A vector measurement is required for distance, a scalar measurement is required for displacement
d
A vector is only used in measuring forces, a scalar is only used in measuring mass
Question 22
An object starts moving from point A and continues along a straight path from A to point D.
If the object starts moving from point A and continues along a straight path from point A to point D, which of the following is true?
a
In the interval from point B to point C, the object travels 30 m.
b
In the interval from point A to point D, the object travels 11 m.
c
In the interval from point C to point D, the object travels 0 m.
d
In the interval from point A to point B, the object travels 30 m.
Question 23
Which terms correctly represent a vector quantity and its respective unit?
a
weight - kilogram
b
speed - meters per second
c
force - Newton
d
mass - kilogram
Question 24
The graph below represents the relationship between speed and time for a car moving in a straight line.
What is the acceleration of the car?
a
0.10 m/s2
b
10 m/s2
c
1.0 m/s2
d
0 m/s2
Question 25
If a dolphin swims at 1.85 m/s, how far will the dolphin have traveled after 6.0 s?
a
3.2 m
b
9.0 m
c
11 m
d
31 m
Question 26
When balanced force acts on an object, the net force that results is
a
greater in size than one of the forces.
b
equal to zero.
c
equal in size to one of the forces.
d
greater in size than both forces combined.
Question 27
If you keep a gas's temperature constant, how would you increase the volume of the gas?
a
You would increase the pressure
b
You would decrease the pressure
c
You would decrease the temperature
d
You would change the temperature
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