# What does a body of mass m is moving with speed v make?

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## What does a body of mass m is moving with speed v make?

A body of mass m is moving with speed v makes an elastic one dimensional collision with a stationary body of same mass. They are in contact for very small time interval At. The contact force between them varies as shown in graph.

## What is the kinetic energy of mass m is moving with speed v?

Kinetic energy of a ball of mass and moving with speed is. E . = 1 / 2 M v 2.

## What is the energy of an object of mass m that’s moving with velocity V?

Translational kinetic energy of a body is equal to one-half the product of its mass, m, and the square of its velocity, v, or 1/2mv2.

## How is ke of a moving cart affected if its velocity is reduced to 1 3rd of the initial velocity?

Expert-Verified Answer (2)Its velocity is reduced to one-third of the initial velocity-The kinetic energy reduces to one-ninth of its initial value. By comparing equation (2) with equation (1) we get; The kinetic energy becomes two times its initial value.

## What is the speed and velocity of a moving body?

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.

## What is the momentum of an object of mass m and velocity v answer?

The momentum of an object of mass m, moving with a velocity v is p = mv .

## What is the formula for kinetic energy in terms of mass m and speed v?

Kinetic energy is directly proportional to the mass of the object and to the square of its velocity: K.E. = 1/2 m v2. If the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

## What is the kinetic energy of mass m moving with a velocity of 5m s?

The kinetic energy of an object of mass m moving with velocity of 5 m/s is 25 J.

## Is V velocity or speed in the kinetic energy formula?

This equation states that the kinetic energy (Ek) is equal to the integral of the dot product of the momentum (p) of a body and the infinitesimal change of the velocity (v) of the body.

## What is SI unit of momentum?

Momentum | |
---|---|

SI unit | kilogram meter per second (kg⋅m/s) |

Common symbols | p, p |

Other units | slug⋅ft/s |

Dimension | MLT^{−}^{1} |

## What is m and V in kinetic energy?

To begin, let’s consider a particle of mass “m” moving with a velocity “v.” The kinetic energy of this particle can be defined as the work done to accelerate the particle from rest to its current velocity. According to the work-energy theorem, the work done on an object is equal to the change in its kinetic energy.

## What is the 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).

## What happens to kinetic energy when velocity speed decreases?

The KE is directly related to the square of the speed. If the speed is reduced by a factor of 2 (as in from 60 mi/hr to 30 mi/hr) then the KE will be reduced by a factor of 4.

## Can kinetic energy be affected by velocity?

Kinetic energy depends on the velocity of the object squared. This means that when the velocity of an object doubles, its kinetic energy quadruples.

## What is the final velocity of the two carts after the collision?

For a perfectly elastic collision, the final velocities of the carts will each be 1/2 the velocity of the initial velocity of the moving cart. For a perfectly inelastic collision, the final velocity of the cart system will be 1/2 the initial velocity of the moving cart.

## What does mass and speed make?

The momentum of a moving object is defined as the product of the mass and the velocity, and so is a vector: it has magnitude and direction.

## Does mass of a body change with speed?

The rest mass, always remains constant. But the relative mass will increase when a body moves near the speed of light, not decrease. When it reaches the speed of light, its mass becomes infinite!

## What is work done by the body of mass m revolving with the speed v on a circular path of radius r?

For a circular path, the displacement will be zero. So, the work done will be zero.

## How does mass change with speed?

Another result of the theory of special relativity is that as an object moves faster, its observed mass increases. This increase is negligible at everyday speeds. But as an object approaches the speed of light, its observed mass becomes infinitely large.