Question

1) Find v{v=u+at}; if u=10m/s; a=5m/s; t=2 sec.
2) Find s{s=ut +1/2at?}; if u=sm/s; a=12m/s2 t=3sec.​

Answer 1

Question :-

1) Find v{v=u+at}; if u=10m/s; a=5m/s; t=2 sec.

2) Find s{s=ut +1/2at?}; if u=5m/s; a=12m/s2 t=3sec.

Answer :-

• v = 20m/s
• s = 33m

Step by step explanation :-

1]

Given :-

• u = 10m/s
• a = 5m/s
• t = 2sec

Need to find :-

• v

By using formula :-

• v = u + at

Substituting values in the given formula,

$\rm:\longmapsto{v = 10 + 5(2)} \\ \\ \rm:\longmapsto{v = 10 + 10} \: \: \: \\ \\ \bf:\longmapsto \red{v = 20m/s} \: \:$

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2]

Given :

• u = 5m/s
• a = 12m/s²
• t = 3sec

Need to find :-

• s

By using formula :-

• s = ut + 1/2 at²

$\rm:\longmapsto{s = 5(3) + \frac{1}{ \cancel2} \times \cancel {12} \times 3} \\ \\ \rm:\longmapsto{s = 15 + 6 \times 3} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \rm:\longmapsto{s = 15 + 18} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \\ \\ \bf:\longmapsto \red{s = 33m} \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \: \:$

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