45 Questions
What is the net force calculated as when pushing a go-cart with forces of 7 N and 10 N forward, and friction of 5 N?
(7 N + 10 N) - 5 N
What is the purpose of friction between car tires and the road?
To prevent skidding
What type of force occurs when an object is being pulled by forces acting from opposite ends?
Tension
What is an example of compression force?
Crushing a ball of dough
What type of forces do bridges experience due to the weight of vehicles passing over them?
Both compression and tension
What is the force that occurs when an object is being squashed or deformed by forces acting towards each other?
Compression
What is the purpose of the normal force?
To support the weight of an object
What type of forces are friction, normal force, tension, and compression?
Contact forces
What is the primary characteristic of contact forces?
They occur between objects that are physically touching each other
What is the direction of frictional force in relation to an object's motion?
In the opposite direction to the motion
What is the normal force acting on an object that rests on a flat surface?
A force perpendicular to the surface, equal in magnitude but opposite in direction to the weight of the object
What is the relationship between friction and normal force?
Friction depends on the type of surface and the normal force
What is the purpose of the normal force?
To prevent an object from penetrating a surface
What is necessary to move an object?
A force greater than the frictional force
What is the effect of friction on an object's motion?
It decreases the object's speed
What is the net result of frictional forces in the example of pushing a go-cart?
The go-cart maintains its current velocity.
Which type of force is responsible for preventing skidding when driving a car?
Frictional force
What type of force occurs when a rope is used to pull a block across the floor?
Tension force
What happens to the shape of an object when it is subjected to compression force?
It becomes squashed or deformed.
What type of force is responsible for a tennis ball's deformation when it is squeezed?
Compression force
What type of forces act on a bridge due to the weight of vehicles passing over it?
Both compression and tension forces
What is the difference between contact and non-contact forces?
Contact forces act with physical contact, while non-contact forces act without physical contact.
What is the purpose of exploring the different types of forces in physics?
To understand the causes of object motion.
What is the direction of frictional force?
Opposite to the direction of an object's motion
What is the purpose of the normal force?
To prevent penetration of an object into the surface
Which of the following is a factor affecting friction?
The normal force on an object
What happens when a force greater than the frictional force is applied to an object?
The object begins to move
What is the relationship between the normal force and the weight of an object on a flat surface?
The normal force is equal in magnitude but opposite in direction to the weight of the object
What is the force that opposes motion between two surfaces in contact?
Friction
What is the result of friction on an object's motion?
The object decelerates
What is the effect of the normal force on the motion of an object on a flat surface?
It has no effect on the motion of the object.
Which of the following is NOT a factor that affects the amount of friction between two surfaces?
The colour of the objects.
What is the minimum force required to move an object that is in contact with a surface?
A force greater than the frictional force.
In a free-body diagram of an object on a flat surface, what is the direction of the normal force?
Perpendicular to the surface.
What is the relationship between the normal force and the frictional force?
The frictional force depends on the type of surface and the normal force.
What is the result of applying a force less than the frictional force to an object?
The object will not move.
What is the primary characteristic of contact forces?
They require physical contact between objects.
In the example of pushing a go-cart, what is the net force acting on the go-cart due to?
The combined effect of the forces pushing it forward and friction
Which of the following is a common result of compression force?
Squashing or deforming of an object
What is the primary difference between tension and compression forces?
Tension occurs when an object is being pulled, while compression occurs when an object is being squashed
Why do bridges experience both compression and tension due to the weight of vehicles passing over them?
Because the weight of the vehicles is transferred to the pillars, causing compression, and to the cables, causing tension
What is a common characteristic of all contact forces?
They require physical contact between objects
What is the purpose of exploring the different types of forces in physics?
To understand the characteristics and effects of different types of forces
What determines the magnitude of the frictional force?
The normal force between the objects
What is the relationship between the net force and an object's motion?
An object will move in the direction of the net force
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