There are four equations of uniform acceleration that you use for solving problems like this: * v = u + at * s = ((u+v)/2)t * s = ut + (at2)/2 * v2 = u2 + 2as Where:
u = initial velocity
v = final velocity
s = displacement
t = time
a = acceleration
You will also need to know Newton's second law of motion: * F= ma I can't help much more with your question without knowing which velocities you know, but I can tell you that the last one won't be much help.
Velocity = (velocity when time=0) + (Force x time)/(mass) ===> F = MA A = F/M V = V0 + A T
There is not enough information. Force = Mass*Acceleration. Acceleration is the rate of change in velocity. This requires information on change in velocity as well as the time over which the change took place. There is no information at all on the latter.
Decrease ..
You cannot. Force = Mass*Acceleration or Mass*Rate of change of Velocity.
Without distance, you have to know time, initial velocity, and acceleration, in order to find final velocity.
Velocity = (velocity when time=0) + (Force x time)/(mass) ===> F = MA A = F/M V = V0 + A T
To calculate distance with velocity and weight, you can use the equation for work: Work = Force x Distance. The force can be calculated by multiplying the weight with gravity. Velocity can then be used to determine the time it takes for the object to travel that distance using the equation Distance = Velocity x Time.
There is not enough information. Force = Mass*Acceleration. Acceleration is the rate of change in velocity. This requires information on change in velocity as well as the time over which the change took place. There is no information at all on the latter.
The formula for uniform velocity is: Velocity = Distance / Time.
Force equals the mass times the rate of change of the velocity.
Decrease ..
You cannot. Force = Mass*Acceleration or Mass*Rate of change of Velocity.
You cannot.
Velocity is in distance/time, so multiplied by 1/distance would give you 1/time. Hope this helps!
Without distance, you have to know time, initial velocity, and acceleration, in order to find final velocity.
You can't. The mass is irrelevant to velocity. You need the distance.
That's a very, very unclear question, open to many, many different interpretations the way it's written. If mass and force are given, then velocity is a result of those. It's constantly changing, and it can't also be given. Exactly what is sought ? Is it the time at which the force first began ? The time at which it was removed ? The total time period during which it continued ? Th etime after which a certain speed was reached ? Also, the question asks for the "equations" ... plural. Why is there more than one equation for "time" ? The question needs to be much better presented.