# What is the velocity of a body of mass 2kg changes from?

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## What is the velocity of a body of mass 2kg changes from?

The velocity of a body of mass 2 kg changes from v1= 2ˆi+3ˆj−ˆk m/s to v2=−3ˆi+2ˆj+3 ˆk m/s in 3 sec under the influence of a external force.

## Is a small sphere of mass 1kg moving?

A small sphere of mass m=1kg is moving with a velocity (4^i−^j)m/s. It hits fixed smooth wall and rebounds with velocity (^i+3^j)m/s. The coefficient of restitution between the sphere and the wall is n/16.

## How do you find the velocity of the body of mass 2kg?

Velocity of a body of mass 2 kg moving in x-y plane is given by v⃗ =(2i^+4tj^)m/s, where t is the time in second. The power delivered to the body by the resultant force acting on it at t=5 sec is.

## What is the formula of change in velocity of a body?

Acceleration (a) is the change in velocity (Δv) over the change in time (Δt), represented by the equation a = Δv/Δt. This allows you to measure how fast velocity changes in meters per second squared (m/s^2). Acceleration is also a vector quantity, so it includes both magnitude and direction. Created by Sal Khan.

## Is kg a mass or velocity?

The kilogram is the SI unit of mass and it is the almost universally used standard mass unit. The associated SI unit of force and weight is the Newton, with 1 kilogram weighing 9.8 Newtons under standard conditions on the Earth’s surface.

## Is 1kg a mass?

The kilogram (also kilogramme) is the base unit of mass in the International System of Units (SI), having the unit symbol kg. It is a widely used measure in science, engineering and commerce worldwide, and is often simply called a kilo colloquially. It means ‘one thousand grams’.

## What is the velocity of a particle of mass 1kg?

The average force acting on the particle between t = 0 to t = 2s will be. Q. Velocity of a particle of mass 1 kg moving rectilinearly is given by v =25−2t+t2.

## What is the velocity that a body of 2 kg mass should have in order to have kinetic energy of 100 joules?

Expert-Verified Answer kinetic energy = 1/2 × mass × velocity². velocity² = 100. that is 10 m / s. the velocity of a body of mass 2 kg having kinetic energy of 100 joules is 10 m / s.

## What is the kinetic energy of a body of mass 2 kg moving with a velocity of 0.1 m per second square?

Expert-Verified Answer K.E = 0.01 J. Hence, the kinetic energy of a body is 0.01 Joule.

## What is the kinetic energy of a body of mass 2 kg moving with a velocity of 0.1 m?

The correct answer is: 0.01 J With an increase in its height the potential energy increases.

## What is the SI unit for velocity?

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

## What is final velocity?

Initial and Final Velocity Initial velocity describes how fast an object travels when gravity first applies force on the object. On the other hand, the final velocity is a vector quantity that measures the speed and direction of a moving body after it has reached its maximum acceleration.

## What is a change in velocity called?

The rate of change of velocity is called acceleration. Acceleration is the ratio of change in velocity with time.

## What must be the velocity of a moving body of mass 2kg so that its ke is 25j?

Expert-Verified Answer Ans.) The velocity of a moving body is 5 m/s.

## What force will change the velocity of body of mass 1 kg from?

⇒F=1kg×(30−20)m/s2s=5N.

## What is the change in velocity of the mass?

According to Newton’s second law of motion, the product of the mass and rate of change of velocity is called force. Acceleration is defined as the rate of change of velocity, therefore, F=ma.