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TV3 Ch02 Forces
Ch02 Forces
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Natuurkunde
Middelbare school
vwo
Leerjaar 3
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Ch02 Forces
Slide 1 - Diapositive
The unit of force is
A
Joule
B
Newton
C
Isaacs
D
meter per second
Slide 2 - Quiz
The force upwards on objects under water is called:
A
The upward force
B
The upthrust force
C
The floating force
D
The anti-gravity force
Slide 3 - Quiz
The definition of force is:
A
An energetic motion
B
A change of direction
C
A newtonian motion
D
A push or a pull
Slide 4 - Quiz
The force of gravity on a kitten of 0.5 kg is closest to:
A
0.5 N
B
1.0 N
C
4.8 N
D
5.2 N
Slide 5 - Quiz
When the scale is 1 cm = 4 N,
a 3 cm vector represents:
A
1/4 N
B
4 N
C
1,2 N
D
12 N
Slide 6 - Quiz
The official name for the final force is:
A
The sum force
B
The result force
C
The resultant force
D
The final force
Slide 7 - Quiz
If a force of 45 N to the right, and a force of 24 N to the left are exerted on Tom, the resultant force is:
A
69 N to the right
B
69 N to the left
C
21 N to the right
D
21 N to the left
Slide 8 - Quiz
The 'C' in the formula F=C times x stands for:
A
extension
B
resultant force
C
length of spring
D
spring constant
Slide 9 - Quiz
A high value for the spring constant means:
A
the spring is very long
B
the spring is very short
C
the spring is very flexible
D
the spring is very stiff
Slide 10 - Quiz
The first thing to do, when you have to sketch and calculate a resultant force,
is:
A
indicate what is the positive direction
B
measure the length of the vector
C
subtract the forces
D
add the forces
Slide 11 - Quiz
Newton's first law says: If the resultant force of all forces working on an object is zero, then . . .
A
the object is stationary
B
the object is stationary or has constant velocity
C
the object has constant velocity
D
the object will decellerate
Slide 12 - Quiz
The three main resistive forces are:
A
upthrust, friction and drag
B
force of gravity, friction and rolling resistance
C
force of gravity, air resistance and rolling resistance
D
air resistance, friction and rolling resistance
Slide 13 - Quiz
In space, ...
A
there is zero resistive force
B
there is very little resistive force
C
there is a substantial resistive force
D
the only resistive force is due to gravity
Slide 14 - Quiz
means:
.
∑
.
F
A
The sum of all forces
B
The sum of all resistive forces
C
The resultant force
D
The largest force
Slide 15 - Quiz
The word 'acceleration' in Newton's second law ..
A
refers to an increasing speed
B
refers to a decreasing speed
C
refers to a change of direction
D
can refer to any of the above
Slide 16 - Quiz
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