# How do you find the velocity of a ball after a collision?

## How do you find the velocity of a ball after a collision?

What is the formula of collision? From the conservation of momentum, the formula during a collision is given by: m1v1 + m2v2 = m1v’1 + m2v’2. If the collision is perfectly inelastic, the final velocity of the system is determined using v’ = (m1v1 + m2v2)/m1 + m2.

## What is the velocity of the 3 kg ball after the collision?

The velocity of the 3 kg ball is 4 m/s after the collision.

## How to calculate velocity?

Determine the object’s original velocity by dividing the time it took for the object to travel a given distance by the total distance. In the equation V = d/t, V is the velocity, d is the distance, and t is the time.

## What is the formula for the velocity of a ball?

The velocity of the falling ball as a function of time is v = -9.8 (m/s2) t j and its position as a function of time is r = (4.9 m – ½ 9.8 (m/s2) t2) j.

## What is the formula for velocity after falling?

vf = g * t The value for g on Earth is 9.8 m/s/s. The above equation can be used to calculate the velocity of the object after any given amount of time when dropped from rest. Example calculations for the velocity of a free-falling object after six and eight seconds are shown below.

## What is the velocity of a 3 kg particle?

The velocity of a 3.00kg particle is given by v = ( 8.00 t + 3.00 t 2 ) m / s ,with time tin seconds.At the instant the net force on the particle has a magnitude of 35.0 N, what are the direction (relative to the positive direction of the x axis) of (a) the net force and (b) the particle’s direction of travel?

## What are the 4 formulas for velocity?

Variable Equation
Velocity v=u+at
Displacement with positive acceleration s=ut+21at2
Displacement knowing initial and final velocities s=21(u+v)t
Velocity squared v2=u2+2as

## What are the 3 formulas for velocity?

• v = u + at.
• v² = u² + 2as.
• s = ut + ½at²

## What is SI unit of velocity?

The SI unit of velocity is metre per second (m/s). Alternatively, the velocity magnitude can also be expressed in centimetres per second (cm/s).

## Is velocity same as speed?

Why is it incorrect to use the terms speed and velocity interchangeably? The reason is simple. Speed is the time rate at which an object is moving along a path, while velocity is the rate and direction of an object’s movement. Put another way, speed is a scalar value, while velocity is a vector.

## Is velocity positive or negative?

Velocity includes both speed and direction, thus velocity can be either positive or negative while speed can only be positive. Another way to say this is that speed is the absolute value of velocity.

## What is an example of velocity?

In simple words, velocity is the speed at which something moves in a particular direction. For example as the speed of a car travelling north on a highway, or the speed a rocket travels after launching.

## What is the velocity of the ball after collision with the wall?

So from the ground frame, the velocity of ball after collision with wall is 2u+v. A ball moving with a velocity v hits a massive wall moving towards the ball with a velocity u. An elastic impact lasts for time Δt.

## What is the velocity of the ball after the elastic collision?

Assuming an elastic collision where kinetic energy and momentum are conserved, the answer is the following: m1v1i + m2v2i = m1v1f + m2v2f —–> v1f = -v1i((m2v2f/m1v1i) – 1) Plug in numbers —-> v1f = 4 m/s.

## What is the formula for the velocity of a particle after a collision?

If two particles are involved in an elastic collision, the velocity of the second particle after collision can be expressed as: v2f=2⋅m1(m2+m1)v1i+(m2−m1)(m2+m1)v2i.