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Subjects>Math>Math & Arithmetic

How do you find the mass when given speed and kinetic energy?

Anonymous

∙ 10y ago

Updated: 11/5/2022

You solve the equation for kinetic energy for mass.

KE = (1/2) m v2

(1/2) m v2 = KE

m = 2 KE / v2

Wiki User

∙ 10y ago

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How do you find the speed given joules and mass?

Use the formula for Kinetic Energy (KE), which is the energy due to the motion of an object. KE = (1/2) * (mass) * (velocity)2 where KE is in joules, mass is in kg, and velocity (or speed) would be in meters/sec...Just substitute the appropriate numbers, rearrange and solve for velocity

A boulder with a mass of 2500 kg on a ledge 200 m above the ground falls what is the speed of the boulder just befor it hits the ground?

According to Eculator's calculator for velocity of a falling object, the speed of the boulder won't be dependent on its mass and will be given by:v = (2gh)1/2So, the calculated answer putting h = 200 m would be: 62.609903369994115 m/sec

How do you find work given mass initial velocity and final velocity?

We assume you mean the work done in order to change the velocity of the moving mass.Easiest way is to calculate the change in the kinetic energy of the moving mass, and realizethat it's equal to the amount of work either put into the motion of the mass or taken out of it.Initial kinetic energy = 1/2 m Vi2Final kinetic energy = 1/2 m Vf2Change in kinetic energy = 1/2 m ( Vf2 - Vi2)

How do you find distance given acceleration and speed?

acceleration times speed

How do you find the speed of an object given distance and time?

Divide the distance by the time; the quotient is speed.

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