Question

Please this 4th question please very urgent

Answer 1

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

=

$\frac{20 - 0}{4}$

=5 m/s^2

$f = ma$

$= 20 \: g \: \times \: 5$

$= 0.2 \times 5 \: newtons$

=1 N

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