Podcast
Questions and Answers
What is the force that opposes the motion between the surfaces of the book and the table?
What is the force that opposes the motion between the surfaces of the book and the table?
- Frictional force (correct)
- Gravitational force
- Electrical force
- Magnetic force
What force must be acting on a moving object opposing its motion?
What force must be acting on a moving object opposing its motion?
- Gravitational force
- Magnetic force
- Electrical force
- Frictional force (correct)
Why does a vehicle slow down when brakes are applied?
Why does a vehicle slow down when brakes are applied?
- Due to decrease in engine power
- Due to application of frictional force by brakes (correct)
- Due to increase in air resistance
- Due to reduction in vehicle weight
Why is it difficult to walk on a smooth and wet floor?
Why is it difficult to walk on a smooth and wet floor?
What is the reason for a moving ball on the ground to stop after some time?
What is the reason for a moving ball on the ground to stop after some time?
What device is used for measuring the force acting on an object?
What device is used for measuring the force acting on an object?
Which force causes slipping when stepping on a banana peel?
Which force causes slipping when stepping on a banana peel?
What happens to the reading on the spring balance when a piece of polythene is wrapped around the brick?
What happens to the reading on the spring balance when a piece of polythene is wrapped around the brick?
In the above activity, where is the force of friction acting?
In the above activity, where is the force of friction acting?
What does the distance covered by a pencil cell moving down from a point A on an inclined plane depend on?
What does the distance covered by a pencil cell moving down from a point A on an inclined plane depend on?
What causes friction between two surfaces?
What causes friction between two surfaces?
What happens to the force of friction if a rough surface is involved?
What happens to the force of friction if a rough surface is involved?
What does wrapping a piece of jute bag around a brick demonstrate?
What does wrapping a piece of jute bag around a brick demonstrate?
What is stretched when a force is applied to a spring balance?
What is stretched when a force is applied to a spring balance?
What is a force?
What is a force?
What does the distance moved by an object in unit time indicate?
What does the distance moved by an object in unit time indicate?
What makes an object slow down or go faster?
What makes an object slow down or go faster?
How do fielders stop a ball hit by a batsman?
How do fielders stop a ball hit by a batsman?
What can actions like kicking, hitting, pushing, and pulling be used to describe?
What can actions like kicking, hitting, pushing, and pulling be used to describe?
What happens to a moving ball on the ground when a force is applied to it?
What happens to a moving ball on the ground when a force is applied to it?
What is the term used in science for a push or pull on an object?
What is the term used in science for a push or pull on an object?
In the context of motion of objects, can you infer that to move an object, it has to be pushed or pulled?
In the context of motion of objects, can you infer that to move an object, it has to be pushed or pulled?
What is the action called in science when an object is lifted?
What is the action called in science when an object is lifted?
What type of force is exerted when a magnet attracts a piece of iron?
What type of force is exerted when a magnet attracts a piece of iron?
In the scenario of a man standing behind a stationary car, will the car move due to his presence?
In the scenario of a man standing behind a stationary car, will the car move due to his presence?
In Fig. 8.3 (a), what do both girls appear to be doing to each other?
In Fig. 8.3 (a), what do both girls appear to be doing to each other?
Who is exerting the force in Fig. 8.2 (b) to make the car move?
Who is exerting the force in Fig. 8.2 (b) to make the car move?
What happens when similar poles of two magnets repel each other?
What happens when similar poles of two magnets repel each other?
What is the term used in science for the action of drawing a bucket of water from a well?
What is the term used in science for the action of drawing a bucket of water from a well?
Flashcards
What is friction?
What is friction?
A force that opposes the motion between two surfaces in contact.
What is friction's effect on motion?
What is friction's effect on motion?
The force that slows down a moving object.
How do brakes use friction to stop a car?
How do brakes use friction to stop a car?
Brakes apply a frictional force to the wheels, causing them to slow down.
Why is it hard to walk on a wet floor?
Why is it hard to walk on a wet floor?
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Why does a moving ball eventually stop on the ground?
Why does a moving ball eventually stop on the ground?
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What is a spring balance used for?
What is a spring balance used for?
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How does wrapping polythene around a brick affect friction?
How does wrapping polythene around a brick affect friction?
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Where does the force of friction act between a brick and the floor?
Where does the force of friction act between a brick and the floor?
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What does the movement of a pencil cell on an inclined plane depend on?
What does the movement of a pencil cell on an inclined plane depend on?
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How does friction occur between surfaces?
How does friction occur between surfaces?
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How does surface roughness affect friction?
How does surface roughness affect friction?
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How do different materials affect friction?
How do different materials affect friction?
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What part of a spring balance stretches when force is applied?
What part of a spring balance stretches when force is applied?
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Define force.
Define force.
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What does speed or velocity measure?
What does speed or velocity measure?
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How does force affect an object's motion?
How does force affect an object's motion?
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How do fielders stop a ball in cricket?
How do fielders stop a ball in cricket?
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What do actions like kicking, hitting, pushing, and pulling describe?
What do actions like kicking, hitting, pushing, and pulling describe?
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What happens to a moving ball when force is applied?
What happens to a moving ball when force is applied?
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What is force in science?
What is force in science?
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Do we need force to move an object?
Do we need force to move an object?
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What is lifting in science?
What is lifting in science?
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What force does a magnet exert on iron?
What force does a magnet exert on iron?
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Will a stationary car move if a man stands behind it?
Will a stationary car move if a man stands behind it?
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What are the girls doing in Fig. 8.3 (a)?
What are the girls doing in Fig. 8.3 (a)?
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Who is applying the force in Fig. 8.2 (b)?
Who is applying the force in Fig. 8.2 (b)?
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What happens when similar poles of two magnets are near each other?
What happens when similar poles of two magnets are near each other?
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What is pulling in science?
What is pulling in science?
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