Question

V=u+at u=2 a=-5 t=1/2 work out the value of v

Answer 1

Answer:   $\bold{v=-\dfrac{1}{2}}$

Step-by-step explanation:

v = u + at

Substitute u = 2, a = -5 , t = $\dfrac{1}{2}$

$v=(2)+(-5)(\dfrac{1}{2})\\\\\\.\ =2 - \dfrac{5}{2}\\\\\\.\ =2\bigg(\dfrac{2}{2}\bigg)-\dfrac{5}{2}\qquad \text{need a common denominator to add fractions}\\\\\\.\ =\dfrac{4}{2}-\dfrac{5}{2}\\\\\\.\ =\boxed{-\dfrac{1}{2}}$

Answer 2

Answer:

- $\frac{1}{2}$

Step-by-step explanation:

Substitute the given values into the equation and evaluate

v = 2 + (- 5 × $\frac{1}{2}$)

  = 2 - $\frac{5}{2}$

  = $\frac{4}{2}$ - $\frac{5}{2}$ = - $\frac{1}{2}$