3 years ago

HELP QUICK! Please can anyone do the other half for me

Physics

1 answer:

IrinaVladis [17]3 years ago

4 0

Answer:

9) c

10) c

11) d

12) d

Explanation:

I think it's helps you

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The arrow rise 44.64 m high assuming air friction is negligible

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According to the law of conservation of energy

Kinetic energy = Potential energy at highest

$\frac{1}{2}kx^2=mgh$ ----1

We know that F=kx

So, $k = \frac{F}{x}\\k=\frac{175}{0.75}$

Substitute the value in 1

$\frac{1}{2}(\frac{175}{0.75})(0.75)^2=0.15 \times 9.8 \times h\\\frac{\frac{1}{2}(\frac{175}{0.75})(0.75)^2}{0.15 \times 9.8}=h\\44.64 = h$

Hence the arrow rise 44.64 m high assuming air friction is negligible

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