Question

b] Initial velocity =30 m/s
Final velocity =10 m/s
Time = 5 second
a =v-u/t
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Answer 1

Answer:

10-30/5

-20/5

-4m/s

........................

Answer 2

Explanation:

$a = \frac{v - u}{t}$

$a = \frac{10 - 30}{5}$

$a = \frac{-20}{5}$

$a = -4 \frac{m}{s {}^{2} }$