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AVprozaik [17]
3 years ago
12

Someone please solve question b please with working really stuck much appreciated!

Mathematics
1 answer:
Lapatulllka [165]3 years ago
3 0

Answer:

a) t=\sqrt{\frac{d}{4.9}}

b) t=0.25 s

Step-by-step explanation:

a) We have the following equation:

t=\sqrt{\frac{2d}{9.8}} (1)

Where t is the time is seconds, d is the distance in meters and 9.8 m/s^{2} is the acceleration due gravity

If we divide numerator and denominator inside the square root by 2:

t=\sqrt{\frac{2d/2}{9.8/2}}

We will have:

t=\sqrt{\frac{d}{4.9}}

Hence:

?=4.9

b) Using the same equation (1) with thw following data:

d=32 cm \frac{1 m}{100 cm}=0.32 m

t=\sqrt{\frac{2(0.32 m)}{9.8 m/s^{2}}}

We will have the reaction time:

t=0.25 s

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