ling
Presentation
•
Science
•
9th Grade
•
Practice Problem
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Hard
Standards-aligned
曾小玲 曾小玲
Used 2+ times
FREE Resource
35 Slides • 22 Questions
1
2
Multiple Choice
3
Multiple Choice
What is the significance of Newton's laws of motion in understanding the relationship between force and movement?
They explain how objects interact with forces and predict motion.
They only describe the motion of planets.
They are only relevant for objects at rest.
They are used to calculate the mass of objects.
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5
Open Ended
Explain how an external force can cause acceleration in an object, using an example from sports or daily life.
6
7
8
Multiple Choice
Which of the following statements best describes the relationship between the direction of force and the direction of acceleration?
They are always in the same direction.
They are always in opposite directions.
They are unrelated.
They are sometimes in the same direction, sometimes not.
9
10
Open Ended
Explain how the direction of motion, acceleration, and force are related in different types of motion such as linear, projectile, and circular motion.
11
12
13
Fill in the Blanks
Type answer...
14
Multiple Choice
When the same force is applied to objects of different masses, what happens to the acceleration of the objects?
The object with greater mass has less acceleration.
The object with greater mass has more acceleration.
Both objects have the same acceleration.
Acceleration does not depend on mass.
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20
21
Fill in the Blanks
Type answer...
22
23
Fill in the Blanks
Type answer...
24
25
Multiple Choice
What is the SI unit of force?
Newton
Joule
Watt
Pascal
26
27
Open Ended
Explain how to convert between Kg·w and Newtons using the gravitational acceleration constant. Provide an example calculation.
28
29
Multiple Choice
Which of the following correctly describes the relationship between gravitational acceleration (g) and the distance from the center of the Earth (R)?
g is directly proportional to R
g is inversely proportional to R
g is directly proportional to R squared
g is inversely proportional to R squared
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31
Fill in the Blanks
Type answer...
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33
Multiple Choice
A 3 kg object on a frictionless horizontal surface is acted on by a 12 N horizontal force. What is the acceleration of the object?
4 m/s²
3 m/s²
6 m/s²
12 m/s²
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35
Multiple Choice
A 50 kg cart on a rough surface is pushed by a 200 N horizontal force and accelerates at 3 m/s². What is the frictional force acting on the cart?
50 N
150 N
200 N
100 N
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37
Multiple Choice
Compare the acceleration of a mass m on a smooth surface versus a rough surface when the same force F is applied. What is the main reason for the difference?
The mass is different
Friction is present on the rough surface
The force is different
Gravity is stronger on the rough surface
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39
Multiple Choice
In a system with two masses connected and pulled by a force F on a frictionless surface, how do you calculate the acceleration of the system?
a = F/m1
a = F/(m1 + m2)
a = F/m2
a = F/(m1 - m2)
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41
Fill in the Blanks
Type answer...
42
Open Ended
Explain how the acceleration of a system changes when friction is introduced, using the example of a cart and hanging mass connected by a string.
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45
Multiple Choice
Which of the following statements about the motion of the cart in the experiment described is correct?
The cart moves with constant velocity between O and P.
The cart accelerates between O and P.
The cart decelerates between O and P.
The cart is stationary between O and P.
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47
Multiple Choice
A block of mass 8 kg is acted on by a force of 2 N and moves 3 meters in 6 seconds on a horizontal table. Calculate its acceleration.
0.17 m/s²
0.25 m/s²
0.33 m/s²
0.5 m/s²
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57
Multiple Choice
How does an external force affect the acceleration of an object?
It causes the object to accelerate.
It causes the object to stop moving.
It has no effect on the object's motion.
It only affects the object's direction, not speed.
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