Skydivers fall at a constant speed because

Physics

1 answer:

lidiya [134]3 years ago

6 0

Answer:

Explanation:

the downward force due to gravity is equivalent to the upward force of air resistance so therefore, the skydiver will not accelerate as Force=ma and the total net force is zero. As the skydiver is not experiencing any force or acceleration, they will remain with a constant speed, making b the correct answer

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IRISSAK [1]

First, let's calculate the total mechanical energy when the block is at rest and the spring is compressed 5 cm:

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Now, let's use this total energy to calculate the velocity when the spring is compressed by 2.5 cm:

$\begin{gathered} ME=PE+KE\\ \\ 1.194=\frac{kx^2}{2}+\frac{mv^2}{2}\\ \\ 2.388=955\cdot0.025^2+1.7v^2\\ \\ 1.7v^2=2.388-0.597\\ \\ 1.7v^2=1.791\\ \\ v^2=\frac{1.791}{1.7}\\ \\ v^2=1.0535\\ \\ v=1.026\text{ m/s} \end{gathered}$

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1 year ago

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Marina86 [1]

Answer:

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