Chapter P10- Force and Motion Flashcards
What is the equation to calculate the resultant force?
What law is this classified as?
What are the units for the different parts of the equation?
What does this mean?
Inversely, what else does this mean?
What is the weight of an object?
What is weight measured in?
What does the mass of an object depend on?
What is mass measured in?
What is the equation to calculate weight?
Resultant force
Newton’s Second Law
N, kg, m/s2 (squared)
Acceleration is proportional to the resultant force on the object
Acceleration is proportional to the mass
The force on it due to gravity
Newton’s, N
The quantity of matter in it
Grams or kilograms, g or kg
Weight= Mass x Gravitational field strength.
What is the gravitational field strength on the Earth’s surface?
What is a falling object acted by?
What does this cause the object to do?
When will the object continue to accelerate?
When will an object be acted on by a drag force?
What will be reduced?
What is terminal velocity concerning speed?
What will happen the lower the weight of an object?
What will happen the denser the substance?
9.8 N/kg
Its falling weight
Accelerate
If no other forces act on it
If the object is travelling through a fluid
The acceleration
The maximum speed an object can produce due to the weight and the drag force being balanced
The slower it is for the object to fall
The bigger the drag coefficient.
What is thinking distance?
What are five factors that can affect thinking distance?
What is braking distance?
What are five factors that can affect braking distance?
What is the equation for calculating momentum?
What are the units for the different parts of the equation?
What does the law of conservation of momentum state?
In what system does this law apply to?
The distance you travel while registering a hazard and pushing the brakes
Alcohol; drugs; tiredness; muscle memory; speed
The distance you travel when the brakes are pushed until the car stops
Weather conditions; tyre conditions; condition of brakes; speed; road conditions
Momentum= Mass x Velocity
kgm/s; kg; m/s
That the total momentum before an event is equal to the momentum after the event
In a closed system.
When is an object called elastic?
What does directly proportional mean?
What is directly proportional to the force applied in Hooke’s law?
What else has to occur for this happen?
What is the equation for calculating the force applied?
What is spring constant measured in?
When is an object said to obey Hooke’s law?
What would happen if you continued to add weight to the spring?
What is this called?
If it returns to its original shape when the forces deforming it are removed
That if one variable is doubled, so is the other one
The extension of a spring
The limit of proportionality isn’t exceeded
Force applied= Spring constant x Extension
N/m
If an object stretches in a way that is directly proportional
It would start to stretch more than expected
This is when the material has reached its limit of proportionality.
