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Why is the distance time graph a straight line for?
A straight line on a distance - time graph represents a "constant velocity".
What type of acceleration does a trapezium on a velocity time graph represents?
A period of constant positive acceleration;a second period of zero acceleration; a third period of constant negative acceleration.
What is horizontal line in a speed graph?
Assuming it is a spped v/s time graph, a horizontal line represents motion at a constant speed.
What quantity does the slope of a distance vs time squared graph represent?
Since distance is 1/2 at^2 where a is acceleration, it represents one half of the acceleration
Is direct variation a function?
A direct variation is a situation in which two quantities -- such as hours and pay, or distance and time -- increase or decrease at the same rate. The ratio between the quantities is constant; that is, as one quantity doubles, the other quantity also doubles. so yes it is. -add on- A direct variation is in the form y=ax where a is an constant.
An exponential growth function represents a quantity that has a constant halving time?
That would be an exponential decay curve or negative growth curve.
An exponential decay function represents a quantity that has a decreasing halving time?
exponential decay doesnt have to have a decreasing halving time. it just decays at a certain percentage every time, which might be 50% or might not
An exponential growth function represents a quantity that has a constant doubling time?
True
Does an exponential growth function represents a quantity that has a constant doubling time?
False
Is an exponential decay function represent a quantity that has a constant halving time?
A quantity is said to be subject to exponential decay if it decreases at a rate proportional to its value. The time required for the decaying quantity to fall to one half of its initial value.Radioactive decay is a good example where the half life is constant over the entire decay time.In non-exponential decay, half life is not constant.
An exponential decay function represents a quantity that has a constant doubling time?
depends it can be true or false Apex: False
A quantity that represents the rate of change of distance over a period of time?
Speed
Can an object have a constant spped and velocity at the same time?
Velocity is a vector quantity. That means it has direction and magnitude. Speed is a scalar quantity, it only has magnitude. It is possible to have constant speed and constant velocity but it is also possible to have constant speed but changing velocity if the object is changing direction.
What is the physical meaning of time constant?
Physically, the constant represents the time it takes the system'sstep responseto reachof its final (asymptotic) value.
An exponential function is written as Fx equals a bx where the coefficient a is a constant the base b is but not equal to 1 and the exponent x is any number?
positive
Is the quantity represented by x is a function that changes over time ie is not constant true or false?
True!
Why is the distance time graph a straight line for?
A straight line on a distance - time graph represents a "constant velocity".
