Physics
Grade-9
Easy
Question
How does friction affect speed?
- More friction decreases speed
- More friction increases speed
- Less friction decreases speed
- Less friction does not affect speed.
Hint:
Since friction always acts in the direction that is counter to the direction that an object is moving or attempting to move, it is a constant. A moving object is always slowed down by friction.
The correct answer is: More friction decreases speed
More friction decreases the speed of a moving object.
- Friction affects the speed of moving objects.
- The speed of an object is more when it creates less friction with the surface.
- More friction reduces the speed of the moving object.
Friction is the force opposing one solid object's movement over another. Four categories of friction exist fluid friction, rolling friction, sliding friction, and static friction.
¶The frictional force keeps our feet planted on the ground when we walk on or on the floor. As a result, we frequently slip on icy or slippery surfaces because there is less friction.
¶According to scientists, friction is caused by the interactions of tiny bumps on surfaces as they rub against each other. The bumps on each surface bend and exert force on each other, making it difficult for the surfaces to slip over each other.
Related Questions to study
Physics
A smooth surface has ____.
A smooth surface has ____.
PhysicsGrade-9
Physics
A marble floor offers less friction. Which property is being related with friction?
A marble floor offers less friction. Which property is being related with friction?
PhysicsGrade-9
Physics
Friction does not depend upon the ____.
Friction does not depend upon the ____.
PhysicsGrade-9
Physics
Friction depends on the ____.
Friction depends on the ____.
PhysicsGrade-9
Physics
Whenever the surfaces in contact tend to move with respect to each other, the force of friction comes into play
Whenever the surfaces in contact tend to move with respect to each other, the force of friction comes into play
PhysicsGrade-9
Physics
Friction can be reduced by using
Friction can be reduced by using
PhysicsGrade-9
Physics
Friction always ____ of an object.
Friction always ____ of an object.
PhysicsGrade-9
Physics
Friction is a ____.
Friction is a ____.
PhysicsGrade-9
Physics
The force of friction always acts in the direction __________ to that of the applied force.
The force of friction always acts in the direction __________ to that of the applied force.
PhysicsGrade-9
Physics
The speed of an object _______ due to the frictional force.
The speed of an object _______ due to the frictional force.
PhysicsGrade-9
Physics
The force of friction always acts in the direction _____ to which an object moves or tries to move.
The force of friction always acts in the direction _____ to which an object moves or tries to move.
PhysicsGrade-9
Physics
The unit to measure friction is ____.
The unit to measure friction is ____.
PhysicsGrade-9
Physics
The force that opposes or resists the relative motion between the two surfaces of objects in contact is called ____.
The force that opposes or resists the relative motion between the two surfaces of objects in contact is called ____.
PhysicsGrade-9
Physics
This is the symbol for a __________.
This is the symbol for a __________.
PhysicsGrade-9
English-2
Fill in the blank with the verbs that agree with the subject.
Bert and Ernie______ an interesting series.
Fill in the blank with the verbs that agree with the subject.
Bert and Ernie______ an interesting series.
English-2Grade-9
