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Numbers in General Form

u=24m, v=10...

Question

$u = 24$ m\s, $v = 10$ m\s, $a = - 0.7$ mpersecond square , find $t$

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Solution

Using the equation of motion $v = u + a t$
$\Rightarrow a t = v - u$
$\Rightarrow t = \frac{v - u}{a} = \frac{10 - 24}{- 0.7} = \frac{- 14}{- 0.7} = 20$ secs

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