Help solving these equations?

Question

The formula for the kinetic energy of a moving object is E = 1/2mv, where E is the kinetic energy in joules, m is the mass in kilograms, and v is the velocity in meters per second.

 

1- solve the equation for v

 

2- find the velocity of an object whose mass is 0.6 kilograms and whose kinetic energy is 54 joules.

Answer 1

Wait!!  I think that e = ½mv² --isn't the squaring of velocity missing in your submission?

 

If you accept my restatement of the formula, do these steps to solve for v:

a) multiply both sides by 2

b) divide both sides by m

c) you now have a formula for v squared.

d) take square root of both sides--there's your expression for v.

 

Part 2: substitute numbers in the above formula.