Homework Help: algebra

Posted by rosa on Sunday, May 23, 2010 at 5:59pm.

The Answer is (32/20)^2=2.56times the kinetic enrgy at 20 m/s 2.56x4500
Problem The kinetic energy (k) of moving object varies jointly with it mass (m) and the square of its velocity(v). If an object has a mass of 22.5 kilgorams and moving with a velocity of 20 meters per second has a kinetic energy of 4500 joules, fined it kinetic energy when the velocity is 32 meters per second.

Write a 250 word summary of the above problem your written work should include but necssarily to the following. An explanation of the problem, a review of the mathematical concept involved a critique of the method used to obtain the solution and an interpertation of the answer please help me.

algebra - Damon, Sunday, May 23, 2010 at 6:33pm
Everything is the same but the velocity.
Ke proportional to v^2
so proportional to

(32/20)^2 = 1.6^2 = 2.56 times original Ke

2.56 * 4500 = 11,520
algebra - Damon, Sunday, May 23, 2010 at 6:35pm
I can not imagine stretching that out into 250 words :)
algebra - rosa, Sunday, May 23, 2010 at 7:42pm
Can someone help me write a 250 word summard of the above problem, wriiten work should include but necessarily limited to the following. An explaniation of the problem, a review of the mathmetical concept invovled a critque of the method used ot obtain the solution, and an interpertation of the answer.

Problem The kinetic Energy (ki) of a moving object varies jointy with it mass (m) and the square of its velocity (v). If an object has a mass of 22.5 kilgorams and moving with a velocity of 20 meters per second has a kinetic energy of 4500 joules,find it kinetic energy when the velocity is 32 meters per second. Please help me

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