# Need help with velocity problems PLease

• xlogit3k
In summary, the conversation is about velocity problems and the question involves finding the velocity of an object given its mass, distance, and applied force. The solution involves using the equation for work and kinetic energy to find the velocity.
xlogit3k
Need help with velocity problems! PLease

## Homework Statement

Work is also measured in Joules. If a 2.59 kg object moves a distance of 56.9 cm as a result of 38N of foce. How fast is the object moving.

?

## The Attempt at a Solution

I started by trying to find the velocity using the square root of 2K(kinetic Energy) divided by the mass.

what did you get for KE in terms of the values provided?

denverdoc said:
what did you get for KE in terms of the values provided?
idk i need help with this stuff in general

The question is a bit fuzzy IMO, but it starts with a statement about work.

Work is defined as force x distance.

If we can assume that all of that work went into propelling the object and none into say potential energy like moving it up a ramp:

the kinetic energy of the mass should be equal to that same quantity.

## 1. What is velocity?

Velocity is a measure of the displacement of an object over time, and it is expressed as distance divided by time. It tells us the speed and direction of an object's motion.

## 2. How do I calculate velocity?

To calculate velocity, divide the change in position (displacement) by the change in time. This can be represented by the equation v = Δx/Δt, where v is velocity, Δx is change in position, and Δt is change in time.

## 3. Why is velocity important?

Velocity is important because it helps us understand how objects move and interact with each other. It is also a crucial factor in determining an object's acceleration, which can provide valuable information about the forces acting on the object.

## 4. What are some common units of velocity?

The most common units of velocity are meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), and feet per second (ft/s). However, other units such as centimeters per second (cm/s) and kilometers per second (km/s) may also be used.

## 5. How can I use velocity in real life?

Velocity has many practical applications in everyday life, such as calculating the speed of a car, determining the time it takes for an airplane to travel between two cities, or predicting the trajectory of a ball in a game. It is also essential in fields such as engineering, physics, and sports science.

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