Everything Flashcards
What is the unit of force in the International System of Units (SI)?
Newton (N)
1 N is equivalent to 1 kg·m/s².
What is the relationship used to calculate average speed?
Average speed = distance moved / time taken
This formula is fundamental in understanding motion.
What type of graph is used to plot and explain distance over time?
Distance-time graph
These graphs visually represent how distance changes with time.
What are the effects of forces between bodies?
Changes in speed, shape, or direction
Forces can cause an object to accelerate, decelerate, or change shape.
Name a type of force that acts on objects.
Gravitational force
Other examples include electrostatic force and frictional force.
What is a vector quantity?
A quantity that has both magnitude and direction
Examples include force, velocity, and acceleration.
How does a scalar quantity differ from a vector quantity?
A scalar quantity has only magnitude
Examples of scalar quantities include mass, temperature, and distance.
What is friction?
A force that opposes motion
Friction is essential in everyday life, affecting how objects move.
What comprises the stopping distance of a vehicle?
Thinking distance + braking distance
Understanding stopping distance is crucial for road safety.
What factors affect vehicle stopping distance?
- Speed
- Mass
- Road condition
- Reaction time
Each of these factors plays a significant role in vehicle safety.
What does Hooke’s law describe?
The relationship between force and extension in elastic materials
It states that the force needed to extend a spring is proportional to the distance it is stretched.
What is elastic behavior in materials?
The ability to recover original shape after deformation
Materials like rubber and springs exhibit elastic behavior.
What is the resultant force?
The total force acting on an object
Calculating the resultant force is essential for understanding motion.
What practical investigation can be conducted related to force and extension?
Investigate how extension varies with applied force for helical springs, metal wires, and rubber bands
This helps to visualize Hooke’s law in action.
