Question

Work out the value of s S= ut + ½ at^2 u= 10 a=-2 t=1/2 Work out the value of s.

Answer 1

$s = ut + ½at²$

Substituting the values,

$⇒ s = 10 \times 0.5 + ½ \times -2 \times (0.5)²$

$⇒ s = 5 + (-0.25)$

$⇒ s = 5-0.25$

$⇒ s = 4.75 m$

$\boxed{Value \: of \: s = 4.75 m}$

Answer 2

Answer:

s = $\frac{19}{4}$

Step-by-step explanation:

substitute the given values into the equation

s = (10 × $\frac{1}{2}$ ) + ( $\frac{1}{2}$ × - 2 × ($\frac{1}{2}$ )² )

  = 5 + (- 1 × $\frac{1}{4}$ )

  = 5 - $\frac{1}{4}$

  = 4 $\frac{3}{4}$

  = $\frac{19}{4}$