WorksheetsFriction Quiz
Total questions: 15
Worksheet time: 8mins
Name
Class
Date
1.
What is friction?
a)
A force that promotes motion
b)
A force that opposes motion
c)
A force that has no effect on motion
d)
A force that only acts in one direction
2.
Which type of friction must be overcome to start moving an object?
a)
Kinetic friction
b)
Static friction
c)
Dynamic friction
d)
Rolling friction
3.
Which of the following statements about static friction is true?
a)
It is always less than kinetic friction
b)
It acts when objects are moving
c)
It acts when objects are stationary
d)
It has no formula
4.
What is the formula for static friction?
a)
Fs = μk × N
b)
Fs = μs × N
c)
Fs = N × g
d)
Fs = μs + N
5.
Which of the following factors increases friction?
a)
Smoother surfaces
b)
Lower normal force
c)
Higher normal force
d)
Higher speed
6.
If a box has a mass of 50 kg and is on a surface with a coefficient of kinetic friction (μk) of 0.2, what is the normal force acting on the box?
a)
490 N
b)
50 N
c)
98 N
d)
0 N
7.
What is the kinetic friction force acting on the box in the previous question?
a)
98 N
b)
490 N
c)
10 N
d)
0 N
8.
Why do trains need clean wheels?
a)
To reduce weight
b)
To increase speed
c)
To ensure proper friction with tracks
d)
To improve aesthetics
9.
Which of the following is an example of low friction?
a)
Walking on concrete
b)
Sliding on ice
c)
Writing with a pencil
d)
Using sandpaper
10.
What is the coefficient of static friction for steel on steel (dry)?
a)
0.03
b)
0.74
c)
0.5
d)
1.0
11.
What occurs when the applied force is less than the static friction force?
a)
The object moves
b)
The object accelerates
c)
The object remains stationary
d)
The object experiences kinetic friction
12.
Which of the following best describes kinetic friction?
a)
It is greater than static friction
b)
It acts when objects are stationary
c)
It acts when objects are moving
d)
It has no effect on motion
13.
How does the weight of an object affect the friction force?
a)
It has no effect
b)
More weight increases friction
c)
Less weight increases friction
d)
It decreases friction
14.
A student is trying to push a heavy box that weighs 100N across different surfaces. Which surface would require the LEAST force to move the box?
a)
Rough concrete
b)
Smooth ice
c)
Carpet
d)
Sandpaper
15.
Why is it harder to push a heavy box compared to a light box across the same surface?
a)
The normal force is greater, leading to more friction
b)
Heavy boxes have rougher surfaces
c)
Light boxes have less surface area
d)
The coefficient of friction changes with weight
100 %
