Respuesta :
Answer:
Step-by-step explanation:
The formula for energy us given as
E=½mv²
This change of formula question, we want to make v the subject of the formula
E=½mv²
Multiply the right and side and the left hand side by 2 to eliminate the ½
2×E= 2×½ mv²
Then, we have
2E=mv²
Divide both side of the equation by m to eliminate m
2E/m=mv²/m
So we have
2E/m=v²
Now take the square of both side of the equation to eliminate square of v
±√(2E/m)=√v²
±√(2E/m)=v
Then,
v=±√(2E/m)
The last option is the correct option
v = plus-or-minus StartRoot StartFraction 2 uppercase E Over m EndFraction EndRoot
Answer:
v = plus-or-minus StartRoot StartFraction 2 uppercase E Over m EndFraction EndRoot
Step-by-step explanation: