Velocity is measured in metres per second, to find how many metres a body has travelled you need t know the length of time it was moving for.
If a body moves at 10 metres per second for 5 seconds, how far does it travel?
It goes 10 metres every second, so in 5 seconds it must go 5 times 10 metres; 50 metres.
You need to multiply the velocity by the time taken. (m/s) X s = m.
You can't. You need either the final velocity or the acceleration of the object as well, and then you can substitute the known values into a kinematics equation to get the initial velocity.
Decrease ..
Divide the distance traveled by the product of the diameter and pi.
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.
To find the distance traveled in the first 5 seconds, we multiply the average velocity by the time traveled. If the object's velocity is constant, this distance is equal to the velocity multiplied by the time.
You can use the equation: distance = (initial velocity + final velocity) / 2 * time. This formula assumes constant acceleration.
You can't. You need either the final velocity or the acceleration of the object as well, and then you can substitute the known values into a kinematics equation to get the initial velocity.
You can find the distance using the equation: distance = (final velocity)^2 / (2 * acceleration). Square the final velocity, divide it by twice the acceleration to get the distance traveled before coming to a stop.
Decrease ..
The equation used to find the velocity of an object is v = d/t, where v is the velocity, d is the distance traveled, and t is the time taken to travel that distance.
Divide the distance traveled by the product of the diameter and pi.
You cannot.
Without distance, you have to know time, initial velocity, and acceleration, in order to find final velocity.
Velocity is defined as distance traveled (directed distance, to be precise), divided by time. Informally, it tells you how fast something goes.
You cannot.
You can't. The mass is irrelevant to velocity. You need the distance.