Question

please answer both questions... :)​

Answer 1

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8)

Given,

$u = 0 \\ v = 36 \: km {h}^{ - 1} = \frac{36 \times 1000}{3600} \: m {s}^{ - 1} \\ = 10 \: m {s}^{ - 1} \\ t = 10 \: s \: \\ a = \: to \: find \\ \\ \: a = \frac{v - u}{t} \\ \: \: \: = \frac{10 - 0}{10} = 1 \: m {s}^{ - 2}$

9)

u = 80 km/h = 22.22 m/s

v = 60 km/h = 16. 67 m/s

t = 5 s

a = to find

$a = \frac{v - u}{t} \\ \: \: \: = \frac{16.67 - 22.22}{5} \\ = - 1.11 \: m {s}^{ - 2}$

Answer 2

-1. 11 m/s²

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