If a ball has 300 Joules of potential energy at its highest point, how much kinetic energy will it have at its highest speed?

Physics

1 answer:

marshall27 [118]3 years ago

5 0

Pállalas PAOKndndAaaaaaa

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A 42.0-kg parachutist is moving straight downward with a speed of 3.85 m/s. (a) If the parachutist comes to rest with constant a

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Answer:

-414.96 N

Explanation:

t = Time taken

u = Initial velocity

v = Final velocity

s = Displacement

a = Acceleration

$v^2-u^2=2as\\\Rightarrow a=\frac{v^2-u^2}{2s}\\\Rightarrow a=\frac{0^2-3.85^2}{2\times 0.75}\\\Rightarrow a=-9.88\ m/s^2$

$F=ma\\\Rightarrow F=42\times -9.88\\\Rightarrow F=-414.96\ N$

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Answer and Explanation:

The aluminum is more productive in the absorption and heat transfer to other particles. It instantly converts heat absorbed from the environment into the atmosphere when removed from the oven, enabling us to operate with it faster than the pie that takes much longer to convert heat to the environment.

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What is the minimum coeffecient of static friction μmin required between the ladder and the ground so that the ladder does not s

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Answer:

$\mu = \frac{1}{2tan\theta}$