2 years ago

When you lift a box off the ground gravity opposes your lifting force.

Physics

1 answer:

ivolga24 [154]2 years ago

6 0

Answer:

TRUE?

Explanation:

Im not really sure what your question is.

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Recall that

${v_f}^2-{v_i}^2=2a\Delta x$

where $v_i$ and $v_f$ are the initial and final velocities, respecitvely; $a$ is the acceleration; and $\Delta x$ is the change in position.

So we have

$\left(21\dfrac{\rm m}{\rm s}\right)^2-{v_i}^2=2\left(0.853\dfrac{\rm m}{\mathrm s^2}\right)(120\,\mathrm m)$

$\implies v_i\approx\boxed{15.4\dfrac{\rm m}{\rm s}}$

(Normally, this equation has two solutions, but we omit the negative one because the car is moving in one direction.)

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bija089 [108]

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Explanation:

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1 year ago

Which form of energy does flowing water possess

Leni [432]

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hydro energy?

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A 100-kg astronaut is floating in outer space. If the astronaut throws a 2-kilogram wrench at a speed of 10 meters per second, w

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Since Astronaut and wrench system is isolated in the space and there is no external force on it

So here momentum of the system will remain conserved

so here we can say

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initially both are at rest

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