Equation Practice

Give the equation with links mass, velocity, and kinetic energy.

• $E_{k\ }=\frac{1}{2}mv^2$

• $E_{k\ }=mv^2$

• $E_{k\ }=\frac{1}{2}mv^{ }$

• $E_{k\ }=2mv^2$

Which equations (select more than one) correctly link mass, velocity, and kinetic energy?

• $E_{k\ }=\frac{1}{2}mv^2$

•  $m=\frac{2E_{k\ }}{v^2}$ 

•  $v\ =\ \sqrt{\frac{2E_k}{m}}$ 

•  $m=\frac{\frac{1}{2}E_{k\ }}{v^2}$ 

•  $v\ =\ \frac{2E_k}{m}$  

In the equation $E_{k\ }=\frac{1}{2}mv^2$  , what happens to  $E_k$  if  $m$  increases?

• increases at a constant rate (directly proportional)

• increases at an increasing rate

• decreases at a decreasing rate (inversely proportional)

• decreases at a constant rate

• increases at a decreasing rate

In the equation $E_{k\ }=\frac{1}{2}mv^2$  , what happens to  $E_k$  if  $v$  increases?

• increases at a constant rate (directly proportional)

• increases at an increasing rate

• decreases at a decreasing rate (inversely proportional)

• decreases at a constant rate

• increases at a decreasing rate

Which is true of the y variable in relation to the x variable in the graph?

• increases at a constant rate (directly proportional)

• increases at an increasing rate

• decreases at a decreasing rate (inversely proportional)

• decreases at a constant rate

• increases at a decreasing rate

Which is true of the y variable in relation to the x variable in the graph?

• increases at a constant rate (directly proportional)

• increases at an increasing rate

• decreases at a decreasing rate (inversely proportional)

• decreases at a constant rate

• increases at a decreasing rate

Which is true of the y variable in relation to the x variable in the graph?

• increases at a constant rate (directly proportional)

• increases at an increasing rate

• decreases at a decreasing rate (inversely proportional)

• decreases at a constant rate

• decreases at an increasing rate

Which is true of the y variable in relation to the x variable in the graph?

• increases at a constant rate (directly proportional)

• increases at an increasing rate

• decreases at a decreasing rate (inversely proportional)

• decreases at a constant rate

• decreases at an increasing rate

Which is true of the y variable in relation to the x variable in the graph?

• increases at a constant rate (directly proportional)

• increases at an increasing rate

• decreases at a decreasing rate (inversely proportional)

• decreases at a constant rate

• decreases at an increasing rate

Which is true of the y variable in relation to the x variable in the graph?

• increases at a constant rate (directly proportional)

• increases at an increasing rate

• decreases at a decreasing rate (inversely proportional)

• decreases at a constant rate

• decreases at an increasing rate