f = ma or m * dv/dt or m * d^2 s/ dt^2? what is equation for t i mean t = ?

Answer 1

t = time.
Suppose v(t) = v(0) + at. Then t = {v(t) - v(0)}/a
Suppose (distance d) = (constant speed v) x time. Then t = d/v

Answer 2

it's all the same equation. (f=ma) is force = mass * acceleration. dv/dt is the derivative of velocity with respect to time which is equal to acceleration. d^2s/dt^2 is the second derivative of position which is acceleration (the first is velocity). It means if your problem gives you a function for position, take the derivative twice with respect to t and plug in the time in question to get force. If it gives you an equation for velocity take the dervative once and plug in t to get force.

Answer 3

t is dimensionless, so i think there could be no formula for t in classic physics.

but i know the average of time (TAU <= a greek alphabet) in measuring the current is: (TAU) = RC

R is the resistance and C is the capacity of the capacitor.

as i said t is dimensionless and does not depend on x. in this formula t only depends on two constant values (not variables)

but the definion of time is not yet completely underestood. read Quantum physics and relativity, to know more about time.

Answer 4

In terms of what do you want t?

you can have (from m=dv/dt) : dt = dv/m => integrate to get
t =(v2 - v1) /m

Answer 5

If you gonna ask a question like that, you could at the least clarify a bit more .

Answer 6

f = ma for constant acceleration, or
f=m(v-v0)/(t)
so, t = f/(m(v-v0))
Jerk is the derivative of acceleation and I would suggest using differential equations to solve things with non-constant acceleration.

Answer 7

t=v/a